Measurements of turbulent natural convection flow over a vertical backward-facing step
- Univ. of Missouri, Rolla, MO (United States)
Measurements of turbulent natural convection boundary-layer air flow over a two dimensional, vertical backward-facing step are reported. The upstream and downstream walls of the step were heated to a constant and uniform temperature, while the step is kept adiabatic. The experiment was carried out for a step height of 22 mm and a temperature difference {Delta}T = 30 C between the heated walls and the ambient air. Laser-Doppler velocimeter and cold wire anemometer were used, respectively, to measure simultaneously the mean turbulent velocity and temperature distributions and their turbulent fluctuations. Measurements of the mean velocities and temperature distributions along with the distributions for turbulent intensities, turbulent heat fluxes, and Reynolds stress are presented at various axial locations upstream and downstream of the step. These detailed measurements can serve as benchmark data for testing the accuracy of turbulence models in predicting numerically the flow and heat transfer characteristics in this geometry and flow conditions.
- Sponsoring Organization:
- National Science Foundation, Washington, DC (United States)
- OSTI ID:
- 445542
- Report Number(s):
- CONF-961105--; ISBN 0-7918-1520-X
- Country of Publication:
- United States
- Language:
- English
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