跨声速偶极子网格法的改进和在颤振计算中的应用

The Improvement of Transonic Doublet Lattice Method and the Application to Flutter Calculation

本文改进了跨声速偶极子网格法（ＴＤＬＭ），且在颤振计算中能自动求颤振点速度，从而较大地提高了计算速度，并有利于方法在较大马赫数及较大减缩频率时的应用。对跨声速飞机机翼作了跨声速非定常气动力计算，对跨声速民航机机翼的颤振模型作了颤振计算，与ＴＤＬＭ的比较表明，两者结果有较好的一致性。

In this paper,Transonic doublet lattice method(TDLM) is improved,and the flutter velocity can be calculated automatically,the computing time is reduced considerably.These improvements are also beneficial to the application of the TDLM at large Mach numbers and reduced frequency.The unsteady aerodynamic results of the transonic wing are presented,and flutter calculation is made.The comparison with TDLM shows that the agreement is very good.