Three-dimensional evolution of body and fluid motion near a wall

Abstract Evolution of three-dimensional body motion within surrounding fluid is addressed, each affecting the other significantly in a dynamic fluid–body interaction. This unsteady problem set near wall. The spatial three-dimensionality present new feature. For inviscid incompressible fluid, basic nonlinear formulation described, followed by linearised form as first exploration parameter space and solution responses. reduces to solving Poisson’s equation underbody planform, subject mixed boundary conditions coupling with integral equations. Numerical analytical properties show dependence mainly on normal pitch motions, well instability or bounded oscillations depending position centre mass body, variety shapes examined.