Abstract
It is important and interesting to study growing process of vortex structure on the wall surface of a body because the vortex structure affects the wake structure and flow force on the body in a direct fashion. Especially on a heaving body with deforming wall surface such as an elastic airfoil the precise study is needed. In this study, I studied numerical analysis on the momentum thickness of boundary layer on the wall surface of a moving thin film. As a result, in the flow direction, the momentum thickness of a rigid thin film corresponded approximately to an elastic thin film. So, heaving-direction velocity affects the wake structure of an elastic deformation.
