COMPUTATION OF UNSTEADY AERODYNAMIC FORCES ON WINGS WITH NAVIER-STOCKS EQUATIONS

摘要

A "dual-time" method for the solution of unsteady three-dimensional Navier-Stocks equations is described in this paper. An implicit real-time discretisation is used, and then the equations are integrated in a fictitious pseudo time. When marching in a pseudo time, the finite-volume method, multi-grid scheme and other acceleration techniques used in steady flow calculations can be used. Bal-win-Lomax turbulence model is applied to simulate the turbulence.