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 measurement techniques of the high sensitive 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 PIV and high-speed infrared thermograph, and to discuss the corresponding to fluctuations of thermal and flow behavior in the separated and reattachment flow over the backward facing step.
