Experimental Study of Beating Motion of Mosquito by Using an Enlarged Model of Wing Symmetry of leading edge vortex on a plate wing during heaving motion

• Published in: Journal of the Visualization Society of Japan Vol. 24; no. Supplement1; pp. 357 - 358
• Main Authors: OHBA, Kenkichi, KONDO, Daisuke, SAKURAI, Atsushi, TAJIKAWA, Tsutomu
• Format: Journal Article
• Language: Japanese
• Published: The Visualization Society of Japan 01.07.2004
• Subjects: Beating motion; Enlarged scale model experiment; Leading edge vortex; Mosquito
• ISSN: 0916-4731; 1884-037X
• DOI: 10.3154/jvs.24.Supplement1_357

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, 12.5 times). As a result of Reynolds number and Strohal number are corresponded and attached wing symmetry, the flow around the wing corresponded indeoendently of the enlarged scale.