ISSN Online: 2377-424X
ISBN Print: 1-56032-797-9
International Heat Transfer Conference 11
L.R.N, "k-ε" MODEL. PREDICTION OF HEAT AND MOMENTUM TRANSFER IN TURBULENT BOUNDARY LAYERS, DEVELOPING UNDER STRONG PRESSURE GRADIENT CONDITIONS.
Resumo
A new Low-Reynolds-Number "k-ε" turbulence model for prediction of heat and momentum transfer in turbulent shear layers developing under strong pressure gradient conditions is proposed. The model is a version of "k-ε" model recently proposed by Shih and Lumley, in which source terms of ε-equation have been modified to account for pressure gradient effects. This modification resulted in considerably improved prediction of strongly decelerated turbulent boundary layers.
Supplemented with algebraic stress relations and a transport equation for turbulent heat flux the present model, unlike existing "k-ε" models, is able to predict heat and momentum transfer in boundary layers developing under strong adverse pressure gradients.
Supplemented with algebraic stress relations and a transport equation for turbulent heat flux the present model, unlike existing "k-ε" models, is able to predict heat and momentum transfer in boundary layers developing under strong adverse pressure gradients.