ISSN Online: 2377-424X
ISBN CD: 1-56700-226-9
ISBN Online: 1-56700-225-0
International Heat Transfer Conference 13
NUMERICAL ANALYSIS OF TURBULENT NATURAL CONVECTION IN A CAVITY
Аннотация
The turbulent flow of air in a 2D cavity with Ra = 1.58×109 was calculated with the standard and RNG k-ε models and three different near-wall treatments. Mean velocity and mean temperature predictions with each of the six ensuing combinations were compared with experimental benchmark data and served to eliminate the non-equilibrium wall functions which produced the worst results with both k-ε models. Turbulence quantities predicted by the four other combinations were in very good agreement with LES results but agree only qualitatively with the experimental data.