Three-dimensional buoyant wall jets released into a coflowing turbulent boundary layer

Journal Article · Tue May 01 00:00:00 EDT 1990 · Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States)

DOI:https://doi.org/10.1115/1.2910385· OSTI ID:5898971

Sinclair, J R; Slawson, P R; Davidson, G A ^[1]

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1. Univ. of Waterloo, Ontario (Canada)

Experiments have been conducted in a water flume to simulate finite-length line sources of heat that issue horizontally at ground level into a coflowing turbulent shear flow. The downstream development of each buoyant jet is documented by detailed mean temperature measurements, which are analyzed to determine the jet trajectory, spread rates, and distance to the point of liftoff from the surface. In addition, a three-dimensional, parabolic, numerical model based on the fundamental conservation equations is developed. Model predictions of several buoyant jets compare reasonably with the experimental data and suggest that the strength of the streamwise vorticity plays an important role in governing liftoff of a buoyant wall jet from the surface.

• OSTI ID: 5898971
• Journal Information: Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States), Journal Name: Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States) Vol. 112:2; ISSN 0022-1481; ISSN JHTRA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
54 ENVIRONMENTAL SCIENCES
540140 -- Environment
Atmospheric-- Thermal Effluents Monitoring & Transport-- (1990-)
BENCH-SCALE EXPERIMENTS
FLUID FLOW
GROUND LEVEL
JETS
LEVELS
MATHEMATICAL MODELS
PLUMES
SIMULATION
TEMPERATURE MEASUREMENT
TRAJECTORIES
TURBULENT FLOW