Simultaneous Measurement of Unsteady Flow and Thermal Fields over a Backward Facing Step Flow

Abstract

In the separated and reattachment flow, unsteady heat transfer, which is relative to the flow behavior, is observed near the reattachment point. To clarify the thermal fluctuation, it is necessary to measure simultaneously thermal and flow fields using the measurement techniques with the high sensitivity and fast response. The aim of this paper is to construct the simultaneous measurement system, which is able to measure unsteady heat transfer and flow behavior using dynamic PIV and high-speed infrared thermography, and to discuss the fluctuations of thermal and flow behavior in the separated and reattachment flow over a backward facing step.