Laboratory simulation of turbulent convection over an urban heat island
A systematic experimental study of the heat-island-induced circulation under turbulent conditions was conducted in the laboratory for an idealized, circular heat island in an initially thermally stratified fluid (water) in a convection tank with no ambient flow. The primary objectives of the study were to obtain a better understanding of the mean and turbulent flow generated by the heat island and to identify the appropriate similarity parameters and scales for simulating such a flow. Three non-dimensional similarity parameters were derived from the governing equations of motion. They are the convection Reynolds number (Re), the Froude number (Fr), and the Prandtl number (Pr). The data indicate that at sufficiently large Re, turbulent convection in the main flow becomes independent of Re which is the basis of the laboratory simulation. These measurements are also compared with field data from several cities and they agree with each other satisfactorily.
- Research Organization:
- North Carolina State Univ., Raleigh, NC (United States). Dept. of Marine, Earth and Atmospheric Sciences
- OSTI ID:
- 6823600
- Report Number(s):
- PB-93-120871/XAB
- Resource Relation:
- Other Information: Pub. in AMS Symposium on Turbulence and Diffusion (10th), Portland, OR., September 29-October 2, 1992. (Preprint Volume). See also PB--91-201410
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
PLUMES
TURBULENT FLOW
TEMPERATURE EFFECTS
SIMULATION
URBAN AREAS
CONVECTION
EQUATIONS OF MOTION
EXPERIMENTAL DATA
FROUDE NUMBER
LEADING ABSTRACT
PRANDTL NUMBER
REYNOLDS NUMBER
ABSTRACTS
DATA
DIFFERENTIAL EQUATIONS
DOCUMENT TYPES
ENERGY TRANSFER
EQUATIONS
FLUID FLOW
HEAT TRANSFER
INFORMATION
MASS TRANSFER
NUMERICAL DATA
PARTIAL DIFFERENTIAL EQUATIONS
540110*
540140 - Environment
Atmospheric- Thermal Effluents Monitoring & Transport- (1990-)