From webserver@lib.washington.edu Thu Feb 22 22:31:43 2001 Date: Thu, 18 Jan 2001 12:18:30 -0800 From: webserver@lib.washington.edu To: scottv@ocean.washington.edu Subject: cross-flow + plume Search History #13 #6 and #11 (0 records) #12 #8 and #11 (0 records) #11 oscillatory (17788 records) #10 oscillating (14207 records) #9 ocillatory (0 records) #8 #4 and #7 (24 records) #7 crossflow (905 records) * #6 #4 and #5 (11 records) #5 cross-flow (927 records) #4 plume (6009 records) #3 cross flow plume (0 records) #2 crossflow plume (0 records) #1 cross-flow plume (0 records) Record 1 of 6 in INSPEC 1980-1984 TI: Finite element analysis of a radioactive tritium patch and a waste heat plume observed near the Pickering Nuclear Power Generating Station, Lake Ontario AU: Lam-DCL; Durham-RW SO: Journal-of-Great-Lakes-Research. vol.10, no.1; 1984; p.59-67 PY: 1984 LA: English AB: Effluents from industrial outfalls often form a moving patch or a steady plume in the receiving water, depending on the duration of the release. Empirical studies of coastal diffusion have shown that the eddy diffusivity obeys a power law of the length scale of the patch or plume. By analyzing a moving patch of radioactive tritium concentration and a steady plume of waste heat, the one superimposing over the other as indicated by the observed data, it is found that the cross-flow eddy diffusivity for a given length scale of the patch is about twice as large as that of the plume. The analysis is based on a variable-grid finite element method, which is used to derive the flow field and also to simulate the transport and diffusion processes. The proposed method is found particularly suitable for domains with irregular coastal structures, such as water intakes and outfalls. DE: lakes-; water-pollution AN: 2263591 *LHM: See records of latest issues received http://catalog.lib.washington.edu/record=b2047893 Location: Fish-Ocean Stacks -- Call number: GB1627.G8 J68 -- LIB HAS: v.1- (Oct. 1975-) -- Lacks v.14 no.4 Record 2 of 6 in INSPEC 1980-1984 TI: Wind tunnel modelling of buoyant plumes AU: Rutledge-KW SO: Univ. Oxford, UK, Jan. 1984; xii+232 pp. PY: 1984 LA: English AB: The short range dispersion in the atmosphere of buoyant gases, such as hot air or natural gas, may be hazardous and dangerous. The available methods for studying this problem were reviewed. Wind tunnel studies were considered to be the most suitable method for studying near-field dispersion, and methods for accurately modelling the near-field behaviour of a buoyant plume of gas were examined. The experiments were performed in the Oxford University 4 m*2 m low speed wind tunnel at a model scale of 1:200. The mean trajectory and rate of spread of a buoyant plume from a 60 m high (full-scale) stack were measured in the presence of a simulated natural wind. The effect of the cross-flow on near-field dispersion was examined by performing experiments in four different simulations of the Earth's atmospheric boundary-layer. The behaviour of the plumes was found to be insensitive to the turbulence of the cross-flow provided the turbulence intensity was of a level characteristic of atmospheric winds. A more critical influence is the velocity profile which should be an accurate simulation of the natural wind profile. DE: air-pollution; atmospheric-boundary-layer; atmospheric-movements; wind -tunnels AN: 2247452 *LHM: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 3 of 6 in INSPEC 1993-1994 TI: Remote sensing observations and analyses of cooling water discharges from a coastal power station AU: Davies-PA; Mofor-LA SO: International-Journal-of-Remote-Sensing. vol.14, no.2; 20 Jan. 1993; p.253 -73 PY: 1993 LA: English AB: Results are reported from a series of remote sensing investigations into the marine discharge of cooling water from a coastal power station complex. Qualitative observations and analyses of the spreading behaviour of the thermal discharge are presented for a range of tidal states, using ATM data from a series of aircraft overflights of the site. It is demonstrated that, under ebb flow conditions, the discharges from two adjacent outfalls are merged into an integrated surface plume in the far -field, and that the plume behaves subsequently as if generated by a single source. It is shown that the lateral spreading of the plume is inhibited significantly by coastal attachment and local thermal forcing and cross-flow effects. Calibrated overflight data from the thermal infrared bands have been used to quantify the unimpeded offshore spreading, and estimates are presented of the transverse turbulent diffusion coefficient epsilon /sub t/ for the site in question. DE: oceanographic-regions; oceanography-; water-pollution AN: 4396090 *LHM: Connect to this title online; UW restricted; http://www.catchword.com/rpsv/catchword/tandf/01431161/contp1-1.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2052700 Location: Available Online Location: Engr Periodicals-Floor 2 -- Shelved by title: International journal of remote sensing -- Call number: QC808.5 .I57 -- LIB HAS: v.1- (1980-) -- LATEST ISSUES ON DISPLAY Record 4 of 6 in INSPEC 1995 TI: Prediction of opposing turbulent line jets discharged laterally into a confined crossflow AU: Chang-YR; Chen-KS SO: International-Journal-of-Heat-and-Mass-Transfer. vol.38, no.9; June 1995; p.1693-703 PY: 1995 LA: English AB: A numerical study is presented for the mixing of opposing heated line jets discharged normally or at an angle into a horizontal cold cross-flow in a rectangular channel. The k- epsilon turbulence model is adopted and the simulation is performed for the jet-to-cross-flow momentum flux ratio ranging from 0.42 to 5.42 and the incident angle from 60 degrees to 90 degrees . The results show that there is a strong recirculation near the downstream region of the nozzle opening, and the temperature field behaves like a deflected plume. The turbulent kinetic energy is high in the region where the vertical velocity gradient is steep. The vertical temperature profiles can be expressed as the self-similar forms. Correlations for the jet temperature and velocity trajectories, the penetration and circulation depths, the jet half-width, and the reattachment point are derived in terms of the momentum flux ratio, the downstream distance and the incident angle. As compared to the case of a one-side line jet, the opposing jets will hinder the vertical penetration but increase the horizontal velocity when the jets impinge on each other. Better thermal mixing can be achieved at higher momentum flux ratio and incident angle. DE: confined-flow; flow-simulation; jets-; mixing-; temperature-distribution; turbulence- AN: 4948262 *LHM: Connect to the latest 9 months of this title online; UW restricted; http://www.sciencedirect.com/web -editions?_ob=JournalURL&_cdi=5731&_auth=y&_acct=C000021514&_version=1&_urlVersion=0&_userid=450576&md5=f4cbf5264e1a89f0db5937ece66ed027&sb=y See records of latest issues received http://catalog.lib.washington.edu/record=b2006932 Location: Available Online Location: Engr Periodicals-Floor 2 -- Shelved by title: International journal of heat and mass transfer -- Call number: 536.205 IN -- LIB HAS: v.1- (1960-) -- LATEST ISSUES ON DISPLAY Location: Auxiliary Stacks -- Call number: 536.205 IN -- LIB HAS: v.1-24 (1960 -1981) Record 5 of 6 in INSPEC 1995 TI: Horizontally integrated atmospheric heat flux from an Arctic lead AU: Glendening-JW SO: Journal-of-Geophysical-Research. vol.100, no.C3; 15 March 1995; p.4613-20 PY: 1995 LA: English AB: Vertical distribution of the horizontally integrated heat injected into the atmosphere by an Arctic lead is investigated, based upon large-eddy simulations of its convective plume. The horizontally integrated heat flux varies exponentially with height except under conditions of relatively weak cross flow, when vertical advective transport becomes significant. Its vertical scale, which depends upon the lead size, surface heat flux, atmospheric stratification, and cross-lead wind component, is approximately one fourth of the maximum plume height, indicating that the depth of largest heat transfer is significantly shallower than the depth of the plume. A parameterization is developed to incorporate this small -scale heat injection into large-scale models which cannot resolve individual leads. The amount of heat recaptured by the ice downwind of a lead is significant when cross-lead flow is relatively strong and when the plume depth is shallow. DE: atmospheric-thermodynamics; sea-ice AN: 4931370 *LHM: See records of latest issues received http://catalog.lib.washington.edu/record=b2037688 Location: Fish-Ocean Stacks -- Call number: 538.705 TE Sec.C -- LIB HAS: v.83- (1978-) -- Sec.C (Oceans); LATEST ISSUES ON DISPLAY Location: Fish-Ocean Stacks -- Call number: 538.705 TE -- LIB HAS: v.64-v.82 (1959-1977) Location: NatSci Periodicals -- Call number: 538.705 TE -- LIB HAS: v.54- (1949 -) -- LATEST ISSUES ON DISPLAY Record 6 of 6 in INSPEC 2000/07-2000/12 TI: Unification of non-dimensional solutions to asymptotic equations for plumes of different shape AU: Tate-PM; Middleton-JH SO: Boundary-Layer-Meteorology. vol.94, no.2; Feb. 2000; p.225-51 PY: 2000 LA: English AB: A model of buoyant fluid rise is developed in a Lagrangian framework. Results from the model are validated by comparison with laboratory and field experiments. The model is sufficiently general to include geometries of any cross-sectional shape. Exact solutions to the asymptotic equations for continuous discharges from line and point sources and for an instantaneous discharge from a point source are considered. Prismatic, cylindrical and spherical shapes approximate these three geometries, respectively. Accommodation of these shapes within the same general model allows for direct comparison. It is shown that, for discharges into a cross-flow that may be stratified or unstratified, the non-dimensional trajectory, thickness and dilution can be uniquely specified using three parameters. These are the non-dimensional size of the source, the relative importance of the initial fluxes of momentum and buoyancy and the number of orthogonal axes through which entrainment can occur. Such non -dimensional results are particularly useful for examining those scenarios for which there are limited experimental data. DE: air-pollution; atmospheric-boundary-layer MN: B099-2000-004 AN: 6728977 *LHM: See records of latest issues received http://catalog.lib.washington.edu/record=b1998383 Location: NatSci Periodicals -- Call number: QC880 .B77 -- LIB HAS: v.1- (Mar. 1970-) -- LATEST ISSUES ON DISPLAY From webserver@lib.washington.edu Thu Feb 22 22:31:47 2001 Date: Thu, 18 Jan 2001 12:24:18 -0800 From: webserver@lib.washington.edu To: scottv@ocean.washington.edu Subject: crossflow + plume Search History #13 #6 and #11 (0 records) #12 #8 and #11 (0 records) #11 oscillatory (17788 records) #10 oscillating (14207 records) #9 ocillatory (0 records) * #8 #4 and #7 (24 records) #7 crossflow (905 records) #6 #4 and #5 (11 records) #5 cross-flow (927 records) #4 plume (6009 records) #3 cross flow plume (0 records) #2 crossflow plume (0 records) #1 cross-flow plume (0 records) Record 1 of 14 in INSPEC 1996 TI: Some observations of a large, burning jet in crossflow AU: Mungal-MG; Lozano-A SO: Experiments-in-Fluids. vol.21, no.4; Aug. 1996; p.264-7 PY: 1996 LA: English AB: Some results are presented on the temporal evolution of a large jet in crossflow consisting of the burning plume from an unabated oil well discharge. The volume rendering approach is used whereby several sequential x-y images of the jet are stacked in time, t, to produce an object in x-y-t space which can be used to conveniently examine the jet dynamics. Similar to earlier findings for free jets, the burning jet in crossflow is seen to consist of a series of large-scale organized structures which convect downstream leading to a quasiperiodic flame tip burnout. The wake region however is seen to be much less organized. Most surprising is the constant speed of the burning structures as they progress from the jet to crossflow direction. It therefore appears that an underlying organization exists in the jet in crossflow, in spite of its relatively complex, three-dimensional structure. DE: chemically-reactive-flow; combustion-; flames-; flow-measurement; flow -visualisation; jets- MN: E866-96009 AN: 5420692 *LHM: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00348/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2060386 Location: Available Online Location: Engr Periodicals-Floor 2 -- Shelved by title: Experiments in fluids -- Call number: TA357 .J65 -- LIB HAS: v.1- (1983 -) -- LATEST ISSUES ON DISPLAY Record 2 of 14 in INSPEC 1996 TI: Numerical simulation of vertical forced plume in a crossflow of stably stratified fluid AU: Hwang-RR; Chiang-TP SO: Transactions-of-the-ASME.-Journal-of-Fluids-Engineering. vol.117, no.4; Dec. 1995; p.696-705 PY: 1995 LA: English AB: In this study, an investigation using a three-dimensional numerical model, which treats conservation of mass, momentum, and salinity simultaneously, was carried out to study the character of a vertical forced plume in a uniform cross-stream of stably linear stratified environment. A k- epsilon turbulence model was used to simulate the turbulent phenomena and close the solving problem. The performance of the three-dimensional model is evaluated by comparison of the numerical results with some available experimental measurements. Results indicate that the numerical computation simulates satisfactorily the plume behavior in a stratified crossflow. The secondary vortex pairs in the cross section induced by the primary one change as the plume flows downstream. This denotes the transformation of entrainment mechanism in stratified crossflow. DE: flow-simulation; jets-; stratified-flow; turbulence-; vortices- AN: 5217589 *LHM: Connect to this title online; UW restricted; http://ojps.aip.org/ASMEJournals/Fluids/ See records of latest issues received http://catalog.lib.washington.edu/record=b2038846 Location: Available Online Location: Engr Periodicals-Floor 2 -- Shelved by title: Journal of fluids engineering -- Call number: TA357 .J66 -- LIB HAS: v.100- (1978-) -- LATEST ISSUES ON DISPLAY Location: Engr Periodicals -Floor 2 -- Shelved by title: Transactions . American Society of Mechanical Engineers -- Call number: 620.6 MET -- LIB HAS: v.95-99 (1973 -1977) -- Journal of fluids engineering; Bound with pt.4 of: Transactions . American Society of Mechanical Engineers Record 3 of 14 in INSPEC 1980-1984 TI: Reynolds number effects on the nearfield mean characteristics of a laboratory model thermal plume AU: Kuhlman-JM; Chu-L-C SO: Transactions-of-the-ASME.-Journal-of-Fluids-Engineering. vol.105, no.1; March 1983; p.34-40 PY: 1983 LA: English AB: Laboratory model data are presented for the three dimensional time averaged thermal characteristics of a buoyant rectangular surface thermal plume in a crossflow. Plume trajectories and widths, as determined from dye studies and thermocouple measurements, and isotherm contours have been obtained for internal Froude numbers ranging from 0.79-1.3, for crossflow-to-jet velocity ratios of 0.56 and 1.13, at a nominal Reynolds number of 20000 and a Froude number of 0.058. These data are compared with earlier model studies at lower Reynolds number, where a surprisingly large effect of Reynolds number upon buoyant jet development has been found. DE: thermal-properties-of-substances; turbulence- AN: 2169672 *LHM: Connect to this title online; UW restricted; http://ojps.aip.org/ASMEJournals/Fluids/ See records of latest issues received http://catalog.lib.washington.edu/record=b2038846 Location: Available Online Location: Engr Periodicals-Floor 2 -- Shelved by title: Journal of fluids engineering -- Call number: TA357 .J66 -- LIB HAS: v.100- (1978-) -- LATEST ISSUES ON DISPLAY Location: Engr Periodicals -Floor 2 -- Shelved by title: Transactions . American Society of Mechanical Engineers -- Call number: 620.6 MET -- LIB HAS: v.95-99 (1973 -1977) -- Journal of fluids engineering; Bound with pt.4 of: Transactions . American Society of Mechanical Engineers Record 4 of 14 in INSPEC 1985-1989 TI: A numerical technique to incorporate frontal boundaries in two-dimensional layer models of ocean dynamics AU: O'Donnell-J SO: Journal-of-Physical-Oceanography. vol.18, no.11; Nov. 1988; p.1584-600 PY: 1988 LA: English AB: Describes a novel numerical technique that exploits the method of bicharacteristics to allow small scale fronts to be included in numerical layer models of the ocean. The approach treats a front as a free boundary and solves the interior problem using a standard finite difference scheme; it employs a method based on the bicharacteristics of the equations to locate the boundary and enforce the boundary conditions. The bicharacteristics for the nonlinear shallow water wave equations are derived and their application to the problem is outlined. The method is demonstrated and evaluated by comparing calculated approximate solutions first, to the exact solution of a simple problem, and second, to a numerical solution of the more complicated problem of the radially symmetric discharge of a buoyant fluid into a stationary, deep ambient fluid obtained using a simple alternative method. The scheme is then applied to investigate the effect of a uniform crossflow in the ambient fluid on the buoyant plume created by a radial discharge. Several calculations demonstrating the consequences of interfacial friction, entrainment and Coriolis acceleration are presented and discussed. DE: oceanography- AN: 3333574 *LHM: Connect to this title online; UW restricted http://ams.allenpress.com/amsonline/?request=get-archive See records of latest issues received http://catalog.lib.washington.edu/record=b2038065 Location: Available Online Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=36166 -- LIB HAS: Jun.1998- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Fish-Ocean Stacks -- Call number: GC1 .J68 - - LIB HAS: v.1- (1971-) -- Latest issues on display Record 5 of 14 in INSPEC 1985-1989 TI: Buoyant surface analysis of the Yukon River AU: Gosink-JP SO: International-Journal-of-Remote-Sensing. vol.9, no.12; Dec. 1988; p.1873-80 PY: 1988 LA: English AB: Thermal infrared satellite imagery of the discharge from the Yukon River obtained on 5 July 1985 was compared with hydraulic theory for the dilution of buoyant surface jets. In a crossflow, the theory predicts that the plume will follow an x/sup 1/3/ trajectory where x is distance alongshore, and that the plume temperature will decay according to x/sup -1/6/ due to mixing with the receiving water. Measurements of the Yukon River discharge indicate very good agreement with the predicted trajectory, and less, but acceptable, agreement with the predicted dilution. Large scale thermal fronts are also observable in the thermal imagery; the fronts may be associated with excursions of the plume due to tidal currents. DE: oceanographic-regions; remote-sensing; rivers- AN: 3373752 *LHM: Connect to this title online; UW restricted; http://www.catchword.com/rpsv/catchword/tandf/01431161/contp1-1.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2052700 Location: Available Online Location: Engr Periodicals-Floor 2 -- Shelved by title: International journal of remote sensing -- Call number: QC808.5 .I57 -- LIB HAS: v.1- (1980-) -- LATEST ISSUES ON DISPLAY Record 6 of 14 in INSPEC 1985-1989 TI: Gaussian versus top-hat profile assumptions in integral plume models AU: Davidson-GA SO: Atmospheric-Environment. vol.20, no.3; 1986; p.471-8 PY: 1986 LA: English AB: Numerous integral models describing the behaviour of buoyant plumes released into stratified crossflows have been presented in the literature. One of the differences between these models is the form assumed for the self-similar profile: some models assume a top-hat form while others assume a Gaussian. The differences between these two approaches are evaluated by (a) comparing the governing equations on which Gaussian and top-hat models are based; and (b) comparing some typical plume predictions generated by each type of model over a range of model parameters. It is shown that, while the profile assumption does lead to differences in the equations which govern plume variables, the effects of these differences on actual plume predictions is small over the range of parameters of practical interest. DE: air-pollution; atmospheric-boundary-layer AN: 2687322 *LHM: See records of latest issues received http://catalog.lib.washington.edu/record=b2018759 Location: Engr Periodicals-Floor 2 -- Shelved by title: Atmospheric environment -- Call number: TD881 .A84 -- LIB HAS: v.1-23 (1967-1989) Record 7 of 14 in INSPEC 1985-1989 TI: Prediction of the steady surface thermal plume in crossflow AU: Demuren-AO SO: Waerme--und-Stoffuebertragung. vol.19, no.1; 1985; p.41-6 PY: 1985 LA: English AB: Presents a two-dimensional numerical procedure which employs finite -difference techniques to solve the partial-differential equations governing the steady flow and heat transfer of a surface thermal plume above a crossflowing ambient fluid in the near field. An earlier model developed for predicting thermal plumes in stagnant surroundings is extended by the inclusion of curvature terms in the momentum equations. An integral equation is also solved to determine the trajectory of the thermal plume. Comparisons of present model calculations with two sets of experimental data show that the centre-line trajectories as well as the velocity and temperature decays are well predicted. DE: heat-transfer; integral-equations; partial-differential-equations AN: 2431598 *LHM: See records of latest issues received http://catalog.lib.washington.edu/record=b2034501 Location: Auxiliary Stacks -- Call number: QC320 .W35 -- LIB HAS: Bd.1-25 (1968-1990) Record 8 of 14 in INSPEC 1990-1992 TI: The characteristic behavior of finite length line sources of heat in a crossflow AU: Slawson-PR; Hitchman-GJ; Hawker-LE SO: Transactions-of-the-ASME.-Journal-of-Heat-Transfer. vol.112, no.2; May 1990; p.349-55 PY: 1990 LA: English AB: A modified simple integral model for plume behavior from finite length line sources of heat and momentum is presented that identifies observed trends in plume trajectory data. Experiments on several finite length line sources of heat and momentum in the form of elevated (rows of stacks) and surface (slot) releases were conducted in a water tunnel. Plume behavior was documented through detailed temperature measurements of the plume cross section and by photographing the dyed plume. Results indicate the nature of any plume trajectory and growth enhancement and confirm the empirical relation for the liftoff distance for a buoyant surface plume given by Meroney (1979). In addition to the liftoff distance, the shape of the plume contact zone was measured and related to various regions of plume trajectory and cross-sectional shape. Plume trajectories from elevated line releases are adequately predicted by standard single source formulations; however, the plume cross-sectional area is significantly overpredicted. DE: flow-measurement; heat-transfer AN: 3752831 *LHM: Connect to this title online; UW restricted; http://ojps.aip.org/ASMEJournals/HeatTransfer/ See records of latest issues received http://catalog.lib.washington.edu/record=b2037837 Location: Available Online Location: Engr Periodicals-Floor 2 -- Shelved by title: Journal of heat transfer -- Call number: TA1 .J64 -- LIB HAS: v.100- (1978-) -- LATEST ISSUES ON DISPLAY Location: Engr Periodicals-Floor 2 -- Shelved by title: Transactions . American Society of Mechanical Engineers -- Call number: 620.6 MET -- LIB HAS: v.81-99 (1959-1977) -- Journal of heat transfer; Bound as pt.2 of: Transactions . American Society of Mechanical Engineers Record 9 of 14 in INSPEC 1990-1992 TI: Wind tunnel experiments on cooling tower plumes. II. In a nonuniform crossflow of boundary layer type AU: Andreopoulos-J SO: Transactions-of-the-ASME.-Journal-of-Heat-Transfer. vol.111, no.4; Nov. 1989; p.949-55 PY: 1989 LA: English AB: For pt.I see ibid., vol.111, no.4, p.941-8 (1989). The basic characteristics of plumes issuing into a boundary layer-type crossflow are reported. The flow can be considered as an interaction between two vorticity fields with different length scales and turbulence intensities. The large eddies of the oncoming boundary layer are responsible for the observed sudden changes in the plume direction. The type of structure emanating from the tower depends on the instantaneous velocity ratio. Mean velocities and normal velocity gradients are smaller than those in the case of uniform crossflow and therefore, the measured turbulence intensities are lower too. The cross-stream turbulence brings high -momentum fluid into the wake region and the velocity defect decays very rapidly. Dilution of the plumes takes place faster in the presence of external turbulence than in the case with uniform crossflow. The spreading rate is increased dramatically by the external turbulence, which causes different effect on the hydrodynamic and thermal fields. DE: boundary-layers; cooling-towers; turbulence-; vortices-; wind-tunnels AN: 3623417 *LHM: Connect to this title online; UW restricted; http://ojps.aip.org/ASMEJournals/HeatTransfer/ See records of latest issues received http://catalog.lib.washington.edu/record=b2037837 Location: Available Online Location: Engr Periodicals-Floor 2 -- Shelved by title: Journal of heat transfer -- Call number: TA1 .J64 -- LIB HAS: v.100- (1978-) -- LATEST ISSUES ON DISPLAY Location: Engr Periodicals-Floor 2 -- Shelved by title: Transactions . American Society of Mechanical Engineers -- Call number: 620.6 MET -- LIB HAS: v.81-99 (1959-1977) -- Journal of heat transfer; Bound as pt.2 of: Transactions . American Society of Mechanical Engineers Record 10 of 14 in INSPEC 1990-1992 TI: Wind tunnel experiments on cooling tower plumes. I. In uniform crossflow AU: Andreopoulos-J SO: Transactions-of-the-ASME.-Journal-of-Heat-Transfer. vol.111, no.4; Nov. 1989; p.941-8 PY: 1989 LA: English AB: Measurements of velocity and temperature field and flow visualization results are reported for an ideal case of cooling-tower plume in the presence of a uniform crossflow for various velocity ratios, densimetric Froude numbers, and Reynolds numbers. Coherent structures in the form of jetlike, wakelike, or mushroom-type vortices have been observed. The type of structure depends primarily on the velocity ratio. As the Reynolds number increases, turbulent structures appear, which have vorticity of the same sign as the partner vortices in the low Reynolds number case. The measurements showed that there is a strong interaction between the bending plume or jet and the wake of the cooling tower, which is basically responsible for the downwash effect. The latter is generally quite strong at low velocity ratios and high Reynolds numbers. High turbulence intensities are produced in the wake of the tower for a distance of 6 to 8 diameters. The plume is diluted faster as the velocity ratio increases and buoyancy decreases. In the wake region of the stack dilution increases with increased buoyancy. DE: cooling-towers; flow-visualisation; temperature-measurement; turbulence-; velocity-measurement; vortices-; wakes-; wind-tunnels AN: 3623416 *LHM: Connect to this title online; UW restricted; http://ojps.aip.org/ASMEJournals/HeatTransfer/ See records of latest issues received http://catalog.lib.washington.edu/record=b2037837 Location: Available Online Location: Engr Periodicals-Floor 2 -- Shelved by title: Journal of heat transfer -- Call number: TA1 .J64 -- LIB HAS: v.100- (1978-) -- LATEST ISSUES ON DISPLAY Location: Engr Periodicals-Floor 2 -- Shelved by title: Transactions . American Society of Mechanical Engineers -- Call number: 620.6 MET -- LIB HAS: v.81-99 (1959-1977) -- Journal of heat transfer; Bound as pt.2 of: Transactions . American Society of Mechanical Engineers Record 11 of 14 in INSPEC 1990-1992 TI: Measurements in two-dimensional plumes in crossflow AU: Ramaprian-BR; Haniu-H SO: Transactions-of-the-ASME.-Journal-of-Fluids-Engineering. vol.111, no.2; June 1989; p.130-8 PY: 1989 LA: English AB: The mean-flow and turbulent properties of two-dimensional buoyant jets discharged vertically upward into a crossflowing ambient have been measured in a hydraulic flume, using laser velocimetry and microresistance thermometry. The trajectory of the resulting inclined plume is found to be nearly straight, beyond a short distance from the source. The flow is essentially characterized by the presence of buoyancy forces along (s -direction) and perpendicular (n-direction) to the trajectory. While the s -component buoyancy tends to destabilize the flow and hence raise the overall level of turbulence in the flow, the n-component buoyancy tends to augment turbulence on the upper part of the flow and inhibit turbulence on the lower part. The experimental data are used to examine these effects quantitatively. DE: jets-; turbulence- AN: 3567119 *LHM: Connect to this title online; UW restricted; http://ojps.aip.org/ASMEJournals/Fluids/ See records of latest issues received http://catalog.lib.washington.edu/record=b2038846 Location: Available Online Location: Engr Periodicals-Floor 2 -- Shelved by title: Journal of fluids engineering -- Call number: TA357 .J66 -- LIB HAS: v.100- (1978-) -- LATEST ISSUES ON DISPLAY Location: Engr Periodicals -Floor 2 -- Shelved by title: Transactions . American Society of Mechanical Engineers -- Call number: 620.6 MET -- LIB HAS: v.95-99 (1973 -1977) -- Journal of fluids engineering; Bound with pt.4 of: Transactions . American Society of Mechanical Engineers Record 12 of 14 in INSPEC 1995 TI: Second-moment closure predictions of buoyant jets in neutral and stratified cross-flows AU: Gosman-AD; Liu-R; McGuirk-JJ SO: Turbulent Shear Flows 9. Selected Papers from the Ninth International Symposium on Turbulent Shear Flows. Springer-Verlag, Berlin, Germany; 1995; ix+471 pp. p.187-206 PY: 1995 LA: English AB: The paper considers the problem of the modelling of scalar mixing in buoyant jets discharged into neutral and stratified cross-flowing streams via a second-moment closure turbulence model. Emphasis is placed on the near-field where the 3D spatial structure is most complex. Comparisons between k- epsilon eddy viscosity predictions and calculations where the Reynolds stresses are modelled using the Gibson-Launder stress transport closure (but retaining an eddy diffusivity model for the scalar fluxes) indicate a noticeable improvement in comparison with measured data for the decay of peak mean density excess levels, plume spread and also the variance of density fluctuations. For the case of discharge into a linearly stratified crossflow, the current predictions show a rapid damping of the plume centre-line about its equilibrium level, in agreement with measurements, but in contrast to integral models for such flows, which indicate significant oscillations. DE: flow-simulation; fluctuations-; jets-; mixing-; numerical-analysis; stratified-flow; turbulence- AN: 4957449 *LHM: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 13 of 14 in INSPEC 2000/07-2000/12 TI: Laboratory observations of interactions of forced plumes with stratified shear layers AU: Folkard-AM SO: Fluid-Dynamics-Research. vol.26, no.6; June 2000; p.355-75 PY: 2000 LA: English AB: Plumes of fluid are often observed in nature to interact with stratified shear layers. Examples of this include chimney plumes hitting inversion -layer ceilings; sewage plumes impinging on unmixed fresh/saltwater interfaces; descending plumes of cold water formed at ice-leads interacting with the oceanic thermocline; and volcano plumes interacting with atmospheric interfaces. Controlled laboratory studies of these phenomena have not previously been described in the literature, and as a result there is a lack of understanding regarding their morphology and dynamics. Thus, a novel set of experiments is described here in which the behaviour of a turbulent plume is observed in the presence of a two-layer ambient. The lower layer, into which the plume initially emerges, is quiescent and at a relatively high density. The upper layer is forced to flow uniformly across the top of the lower layer, and has a lower density. The flow of the resulting plume is characterised by (a) its vertical and lateral spreading in the lower layer; (b) the nature of its extension upstream and downstream at the interface; and (c) the extent to which it penetrates into the upper layer. The behaviour is found to be governed by three non-dimensional parameters: the initial gradient Richardson number of the interface Ri/sub G/, the ratio of the upper layer crossflow speed to the speed of the plume when it first impinges on the interface U/sub F//U/sub PI/, and the ratio of the plume Monin-Obukhov lengthscale to the lower layer depth L/sub M0//H/sub L/. Regime diagrams are presented showing the effects of changing these parameters on the plume flow, quantitative relationships are determined, and practical applications of the results are considered. DE: jets-; shear-flow; stratified-flow; turbulence- MN: L708-2000-006 AN: 6706913 *LHM: Connect to this title online; UW restricted http://www.elsevier.com/locate/fluiddyn See records of latest issues received http://catalog.lib.washington.edu/record=b2070469 Location: Available Online Location: Engr Periodicals-Floor 2 -- Shelved by title: Fluid dynamics research -- Call number: TA357 .F44 -- LIB HAS: v.1- (1986-) -- LATEST ISSUES ON DISPLAY Record 14 of 14 in INSPEC 2000/07-2000/12 TI: Vertical and lateral splitting of a hydrothermal plume at Steinaholl, Reykjanes Ridge, Iceland AU: Ernst-GGJ; Cave-RR; German-CR; Palmer-MR; Sparks-RSJ SO: Earth-and-Planetary-Science-Letters. vol.179, no.3-4; 15 July 2000; p.529-37 PY: 2000 LA: English AB: The generation of multiple, neutrally-buoyant intrusions by a single, bubble-rich plume and plume bifurcation are predicted from theory and experiments but have yet to be documented for hydrothermal plumes. In contrast, bifurcation of volcanic plumes (which are dynamically analogous to hydrothermal plumes) is very common and thus bifurcation of hydrothermal plumes should be expected. Recent 38 kHz echo-sounder and water-column chemical tracer studies near the Steinaholl vent site (Reykjanes Ridge, Iceland), identified a bubble-rich hydrothermal plume intruding at three levels (two main ones and a subsidiary one) before reaching the sea surface and spreading there. The two main intrusions (ca. 100 and 200 m above the vent) show lateral development of two lobes away from the vent and are consistent with the 350 m rise of a bubble plume yielding seafloor and surface gas fluxes of ~2.5*10/sup -3/ and 0.75*10/sup -1/ m/sup 3//s, respectively. The bubble-rich core of the hydrothermal plume also penetrates the 150 m deep thermocline and generates an intrusion visible at the sea surface. Although bifurcation of the bent-over plume could have been initiated by crossflow alone several other processes may also have enhanced plume bifurcation; including interaction with the thermocline and entrainment of the plume lobes by horseshoe eddies in the lee of a 150 m high hill on the seafloor. DE: oceanographic-regions; oceanography-; seafloor-phenomena MN: E019-2000-014 AN: 6665978 *LHM: Connect to this title online; UW restricted http://www1.elsevier.com/journals/epsl/jnl/menu.htm See records of latest issues received http://catalog.lib.washington.edu/record=b1996712 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QE1 .E12 -- LIB HAS: v.1- (1966-) -- Incomplete v.48; LATEST ISSUES IN DISPLAY Location: NatSci Periodicals -- Call number: QE1 .E12 -- LIB HAS: v.1- (1966-) -- LATEST ISSUES ON DISPLAY From webserver@lib.washington.edu Thu Feb 22 22:31:50 2001 Date: Thu, 18 Jan 2001 12:29:01 -0800 From: webserver@lib.washington.edu To: scottv@ocean.washington.edu Subject: oscillatory + plume Search History #15 #4 and #10 (12 records) * #14 #4 and #11 (24 records) #13 #6 and #11 (0 records) #12 #8 and #11 (0 records) #11 oscillatory (17788 records) #10 oscillating (14207 records) #9 ocillatory (0 records) #8 #4 and #7 (24 records) #7 crossflow (905 records) #6 #4 and #5 (11 records) #5 cross-flow (927 records) #4 plume (6009 records) #3 cross flow plume (0 records) #2 crossflow plume (0 records) #1 cross-flow plume (0 records) Record 1 of 3 in INSPEC 1998/01-1998/06 TI: Experiments on stability and oscillatory behavior of planar buoyant plumes AU: Cetegen-BM; Dong-Y; Soteriou-MC SO: Physics-of-Fluids. vol.10, no.7; July 1998; p.1658-65 FTXT: OJPS Article http://link.aip.org/link/?PHF/10/1658 PY: 1998 LA: English AB: Experiments on the onset of buoyant instabilities leading to periodic formation of vortical structures in planar buoyant plumes of helium and helium/air mixtures injected into quiescent air are reported for a range of nozzle widths (w=20-70 mm), plume fluid densities (pure helium to that approaching air), and velocities at the nozzle exit. First, the plume parameters corresponding to the onset of the oscillatory instability were experimentally determined by varying the nozzle exit velocity for different nozzle widths and plume fluid densities in two different nozzle configurations. These configurations corresponded to a freestanding rectangular nozzle and a rectangular nozzle surrounded by a flat plate in the plane of the nozzle exit. The observed plume behavior in the near field was characterized as nonoscillatory, transitional, or pulsatile. The onset of pulsations in the near field of these buoyant plumes (within a height of two nozzle widths) was best correlated in terms of the plume source Reynolds number and the plume fluid to ambient density ratio. It was also found that the boundary conditions surrounding the nozzle exit had an influence on the onset of plume instability in the near field. Specifically, at a given plume to the ambient density ratio, the plumes with flat plate surround were found to transition to the oscillatory state at a lower value of the threshold velocity and therefore are less stable than the plumes originating from freestanding nozzles. Subsequently, the plume oscillation frequencies were measured as a function of plume width, plume source velocity, and the density ratio for a range of these parameters. The plume oscillation frequency was found to correlate well in terms of the nondimensional parameters, Strouhal number, S=(fw)/V/sub p/, and Richardson number, Ri=[( rho /sub infinity /- rho /sub p/)gw]/ rho /sub infinity /V/sub p//sup 2/, yielding a correlation S=0.55Ri/sup 0.45/ determined for 1