关键词: N-S方程, 颤振, 跨音速, 分布式并行计算系统

Abstract: Based on a distributed parallel computing system,a new approach to the transonic flutter of a flexible wing is presented by coupling the computational fluid dynamics (CFD) method with the computational structural dynamics(CSD)method. by using a transfinite interpolation(TFI) scheme to generate a multi-block C-H moving grid,the aerodynamic analysis is carried out by solving the three-dimensional unsteady Navier-Stokes equations. By coupling with the flutter motion equations,the response of the time history of generalized coordinates is found.The critical velocity is got on the base of the response. by considerally decreasing the computing time,a multidisciplinary analysis code runs on a distributed parallel computer system by using the PVM library.Computational results are presented for the transonic flutter of wings with deformed shapes as found in flutter simulations.

Key words: Navier-Stokes equations, flutter, transonic, distributed parallel system