SIMULTANEOUS VISCOUS-INVISCID COUPLING VIA TRANSPIRATION

In viscous-inviscid coupling analysis, the direct coupling technique a nd the inverse coupling technique are commonly adopted. However, stabi lity and convergence of the algorithms derived are usually very unsati sfactory. Here, by using the transpiration technique to simulate the e ffect of the displacement thickness, a new simultaneous coupling metho d is derived. The integral boundary layer equations and the full poten tial equation are chosen to be the viscous-inviscid coupled system. Af ter discretization, the Newton-Raphson technique is pro posed to so Iv e the coupled nonlinear system, Several numerical results are used to demonstrate the accuracy and efficiency of the proposed method. (C) 19 95 Academic Press, Inc.