High Reynolds Channel Flows: Upstream Interaction of Various Wall Deformations

摘要

The upstream non linear interaction at high Reynolds number in a channel with local or global wall distortion is considered. Three methods are used to study the anticipated fluid response to the distal disturbance: 1.1A new asymptotic approach called Successive Complementary Expansion Method (SCEM) leading to a uniformly valid reduced model termed GIBL for Global Interactive Boundary Layer [1,3]. 1.2An eigenmode analysis. 1.3Full Navier-Stokes simulation.