Abstract
The purpose of this study is to investigate flow pattern around mosquito's wing while it is beating. We constructed on experimental apparatus to simulate beating motion of mosquito. An enlarged scale model experiment was carried out using a very low speed wind tunnel under the condition that Reynolds number and Strouhal number were made equal to those of real mosquito. The flow around the wing model moving up and down was visualized using smoke and laser light sheet and it was analyzed by a PIV system. Unsteady vortices were observed to be generated on the upper surface of the model wing in the period of downstroke. We compared the vortices each other on three different kinds of enlarged scale models (8.10.12.5times). The results suggested that it was better to simulate the left and right wings in one body by a plate model because of bilateral symmetry
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