ISSN Online: 2377-424X
ISBN Print: 0-89116-130-9
International Heat Transfer Conference 6
INVESTIGATION OF THE TURBULENT BOUNDARY LAYER ON A PERMEABLE ROUGH SURFACE WITH HEAT TRANSFER
Resumo
The present paper reports on the integral method of the skin friction and heat transfer calculation for nonadiabatic compressible turbulent boundary layer (TBL) on a permeable rough surface in the presence of the heat transfer and pressure gradient. The influence of the roughness is presented as relative variations of the skin friction coefficient and Stanton number. The roughness geometry is taken into account by means of the dynamic and thermal roughness functions, expressions for which are considered to be well-known and independent from the rest perturbation factors. A modification of the Coles' compressibility transformation is developed for TBL on a porous nonadiabatic rough plate in a fully rough regime. The predictions obtained by both integral method and transformation theory are compared with some experimental data.