计算物理 ›› 2001, Vol. 18 ›› Issue (5): 397-401.

• 论文 • 上一篇    下一篇

利用N-S方程模拟机翼气动弹性的一种计算方法

叶正寅1, 王刚1, 杨永年1, 杨炳渊2   

  1. 1. 西北工业大学飞机系, 陕西 西安 710072;
    2. 上海航天局八部, 上海 200233
  • 收稿日期:2001-01-19 修回日期:2001-05-08 出版日期:2001-09-25 发布日期:2001-09-25
  • 作者简介:叶正寅(1963-),男,湖北,教授(博导),博士,主要从事计算流体力学和流固耦合同题研究.
  • 基金资助:
    航空科学基金(00A53001)资助项目

A METHOD TO SIMULATE THE AEROELASTIC PROBLEM BASED ON NAVIER-STOKES EQUATIONS

YE Zheng-yin1, WANG Gang1, YANG Yong-nian1, YANG Bin-yuan2   

  1. 1. Northwestern Polytechnical University, Xi'an 710072, P R China;
    2. Shanghai Aerospace Center, Shanghai 200233, P R China
  • Received:2001-01-19 Revised:2001-05-08 Online:2001-09-25 Published:2001-09-25

摘要: 利用一种双时间方法求解三维非定常N-S方程,得到与任意非定常运动对应的气动力,在求解非定常气动力的同时,在时间域内用二阶龙格 库塔方法求解机翼弹性运动方程,从而模拟粘性流动中的气动弹性全过程.为保证网格生成效率,采用无限插值理论生成O-H型代数网格,考虑了机翼变形时的网格生成问题,并得到计算结果.

关键词: 非线性颤振, 跨音速流, Navier-Stokes方程

Abstract: A dual-time scheme is used to solve the unsteady compressible Navier-Stokes equations to obtain the needed airload.The model structural equations of motions are computed simultaneously using the Runge-Kutta method to calculate the aeroelastic static deformations and responses of wings in the time-domain.The O-H type grid around the deforming wings is generated using the improved transfinite interpolation method so that grid generation in each time-step is not too time-consuming.The numerical results show the transonic flutter speed drop and nonlinear characteristics.

Key words: nonlinear flutter, transonic flow, Navier-Stokes equations

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