进入突风域的超音速翼对地面效应的响应

Unsteady Solution of Supersonic Wings with Ground Effect

进入突风域的超音速翼对地面效应的响应谢正桐，周文伯（工程力学系）关键词突风域，非定常流动，地面效应，数值解中围法分类号Ｖ２１１·１５以超音速飞行的机翼有时会受到各种特殊环境的影响，如飞行器近地面飞行、飞行器进入突风域，这就要求人们对飞行器作非定常超音...

This paper aims to improve Green's function method in calculating the unsteady aerodynanmic forces of supersonic wings with ground effect. Applying the Green's function method, an integro-differential-delay equation is obtained. With spatial discretization by the finite-element method, this equation is approximated by a set of differential delay equations.A mapping method is used to deal with the ground effect. The responses of various wings to sharp-edged gust are presented and the numerical results are found in good agreement with LOMAX results.