Time-Domain Harmonic Balance Method for Turbomachinery Aeroelasticity
Time-Domain Harmonic Balance Method for Turbomachinery Aeroelasticity
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DOI：
10.2514/1.j051848
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发表时间：
2014-01
期刊：
影响因子：
2.5
通讯作者：
F. Sicot;A. Gomar;G. Dufour;A. Dugeai
中科院分区：
文献类型：
--
作者：
F. Sicot;A. Gomar;G. Dufour;A. Dugeai
本文研究了时域谐波平衡方法作为经典时间推进方案的替代方案，用于涡轮机械颤振稳定性研究。采用弱耦合方法，需要计算对结构规定的简谐运动的流体响应。在任意拉格朗日/欧拉框架中制定的谐波平衡方法适用于使用纯粹在时域中表达的相位滞后边界条件的单通道缩减。对第 11 个标准配置的气动弹性实验数据进行了验证，显示出良好的一致性。最后，展示了一个工业测试案例：赛峰斯奈克玛设计的风扇。结果表明，所提出的谐波平衡方法具有良好的准确性，并且计算时间显着减少。
The present paper investigates a time-domain harmonic balance method as an alternative to classical time-marching schemes for stability studies of turbomachineries toward flutter. A weak-coupling approach is applied, which requires computing the fluid response to prescribed harmonic motions of the structure. The harmonic balance method, formulated in the arbitrary Lagrangian/Eulerian framework, is adapted to single-passage reduction using phase-lag boundary conditions expressed purely in the time domain. Validation against experimental data for the 11th standard configuration for aeroelasticity is performed, showing good agreement. Finally, an industrial test case is presented: a fan designed by Safran Snecma. The results show the good accuracy of the proposed harmonic balance method as well as significant reductions in computational time.