PREDICTION OF HEAT-TRANSFER IN AN AXISYMMETRICAL TURBULENT JET IMPINGING ON A FLAT-PLATE

The problem of cooling of a heated plate by an axisymmetric isothermal fully developed turbulent jet has been studied numerically. Computati ons were performed with the normal-velocity relaxation turbulence mode l (V2F model). Local heat transfer coefficient predictions are compare d to the available experimental data. For comparison, computations hav e also been carried out with the widely used k-epsilon model. The V2F heat transfer predictions are in excellent agreement with the experime nts, whereas the k-epsilon model does not properly resolve the how fea tures, greatly over-predicts the rate of heat transfer and yields phys ically unrealistic behaviors. (C) 1998 Published by Elsevier Science L td. All rights reserved.