Abstract
Though a lot of researches on boundary layers around a moving body have been conducted, not only details of growing process of vortices but also relation between moving wall and vortices in the boundary layers are not clarified. In this study, the growing process of vortices near moving wall is explored numerically in case of heaving and elastic thin airfoil during one cycle Re=4,000 and St=0.36 using ANSYS 14.5. As a result, the time and space variations of vorticity on the wall is similar between rigid and elastic airfoils. The vorticity on the wall is strongly depended on the effect of the moving condition, so the effect of the deformation is small. The deformation influence the vorticity near the trailing edge. Consequently, the vortex rolling up from the rigid airfoil is released earlier than that of elastic airfoil.
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