Abstract
The waving of flexible plant termed honami is caused by large scale vortices which are induced by inflectional instability of flow field. The movement of plant in turn may affect the turbulent flow field via resistance to flow, turbulence production and dissipation. The present study treats the interaction of turbulent flow and honami employing 2D LES, in which a concept of “plant grid” is used to treat the movement of plant except for the ordinary LES grid. The result indicates that honami reduces the periodicity of vortex generation and increases the temporally-averaged period of it, compared with the case for which the plant is assumed to be rigid.
