Abstract

An experimental study is made for the separated an reattached flow behind a backward facing step to clarify time-mean and instantaneous heat transfer performances near the reattaching point. The reattaching point is found to fluctuate almost in accordance with the normal distribution. By using several time-mean heat transfer experimental results of different fluctuation amplitude, the instantaneous heat transfer performance near the reattaching point is obtained. Based on this instantaneous performance, the time-mean heat transfer characteristic is calculated and found to be in good agreement with the experimental results.

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