Unsteady compressible 2-D Flow Calculations on a MIMD Parallel Supercomputer

摘要

An existing sequential 2-D Alternating Direction Implicit (ADI) unsteady compressible viscous flow solver has been modified to run on an lntel iPSC/860 parallel supercomputer. Techniques for implementation of boundary conditions and the inversion of the implicit matrix equations are discussed. A Generalized Minimal Residual method is added to the parallel algorithm and tested. Results are presented for steady viscous flow past a NACA 0012 airfoil at 13.4 degree angle of attack, and for a NACA 64-A010 airfoil performing a sinusoidal plunging motion under transonic flight conditions. It concluded that implicit time marching algorithms may be efficiently implemented on parallel message passing architectures.