Fluid flow and heat transfer in an opposed plane jet in a uniform stream. (2nd Report, Analysis in unsteady motions).

Abstract

The purpose of this report is to investigate the fluid flow and heat transfer in an opposed plane jet in a uniform stream. In the previous paper, experimental results indicated that there were unsteady motions of low frequency and large scale, which are known as flapping of the jet. In the present paper, the unsteady motions for Reynolds number of jet Reo=1500 and the ratio of jet to uniform stream velocity α=3.75 are studied numerically by the finite difference method. Previous experimental results are simulated in outline by numerical calculations. Time histories and instantaneous or time-averaged contours for velocity, pressure coefficient, temperature etc. are obtained, and the mechanism of fluid flow and heat transfer is clarified.