An experimental study of developing and fully developed flows in a wavy channel by PIV

An experimental study is presented for a flow field in a two dimensional wa vy channels by PIV. This flow has two major applications such as a blood fl ow simulation and the enhancement of heat transfer in a heat exchanger. Whi le the numerical flow visualization results have been limited to the fully developed cases, existing experimental results of this flow were simple qua litative ones by smoke or dye streak test. Therefore, the main purpose of t his study is to produce quantitative flow data for fully developed and deve loping flow regimes by the Correlation Based Correction PIV (CBC PIV) and t o conjecture the analogy between flow characteristics and heat transfer enh ancement with low pumping power. Another purpose of this paper is to examin e the onset position of the transition and the global mixing, which results in transfer enhancement. PIV results on the Fully developed and developing flow in a wavy channel at Re=500, 1000 and 2000 are obtained, For the case Reynolds Number equals 500, the PIV results are compared with the finite d ifference numerical solution.