Abstract
The purpose of this study is to investigate flapping motion of mosquito's wing and flow field around it while beating. We made simulation experiments for beating motion of mosquito using several enlarged models of different scale which were set in a very low speed wind tunnel under the condition that Reynolds and Strouhal numbers were made equal to those of real mosquito. Flow fields around the model wings moving up and down or flapping were visualized using smoke and laser light sheet and they were analyzed by a PIV system. It was observed that unsteady vortices were generated on the upper surface of the model wing in the period of downstroke. We compared the flow fields around the realistic wing model during the up-and-down motion and flapping motion, and .furthermore compare the lift forces of real mosquito and the model wings.
