跨声速偶极子网格法的改进和在颤振计算中的应用

Improvement of Transonic Doublet Lattice Method and Its Application in Flutter Calculation

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 veiocity can be calcuiated automatically, the computing speed is greatly increased. These improvements are also beneficial to the application of the TDLM at large Mach numbers and leduced frequency. The results of unsteady aerodynamic calculation of the transonic wing and nutter calculation on the wing mock - up of transonic passenger aircraft are eompared with TDLM, which shows satisfactory conformability.