异形容腔在边界受冲击载荷下的流动分析

研究了扇形流域内隔板受冲击激励时大粘性流体的流动特性，通过理论分析和数值计算，证实了域内流动遵循非定常Ｎａｖｉｅｒ－Ｓｔｏｋｅｓ方程，其原变量型有限元方程系数矩阵具有不对称性和非线性性，对Ｎ－Ｓ方程根据具体情况作了一定简化，利用有限元求出其速度一压力分布．结果表明，本文采用的计算方法和简化思想在工程应用中是可行的。

THE ANALYSIS OF FLOW IN A SECTOR-DUCT WITH ITS BOUNDARIES BEING IMPACTED BY ALOAD

This paper discusses the flow characters of silicone oil in a sector domain when its parti-tion wall has a shock excitation. Both theoretical and numerical analysis shows that the flowobeys the unsteady Navies-Stokes equation,and the coefficients matrix of primitive variablefinite element equations is unsymmetry and nonlinear. The paper simplifies the N-S equationand obtains results of the velocity-pressure distribution via finite element method.The re-sults show that the simplfied equation and computation method are feasible for engineeingapplication.