Time-domain harmonic balance method for turbomachinery aeroelasticity

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作者：
20140417219061
机构：
[1] Sico, Frédéric
[2] Gomar, Adrien
[3] Dufour, Guillaume
[4] Dugeai, Alain
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| 1600年 / AIAA International卷 / 52期
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The present paper investigates a time-domain harmonic balance method as an alternative to classical timemarching 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;
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