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首页> 外文期刊>Journal of the American Helicopter Society >Navier-Stokes Prediction of Helicopter Rotor Performance in Hover Including Aeroelastic Effects
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Navier-Stokes Prediction of Helicopter Rotor Performance in Hover Including Aeroelastic Effects

机译：悬停时包括气动弹性效应的直升机旋翼性能的Navier-Stokes预测

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摘要

Two numerical methods (the DLR code FLOWer and the ONERA code CANARI), based on the resolution of the Reynolds Averaged Navier-Stokes equations, are applied in this paper in order to compute the performance of helicopter rotors in hover. The comparison of computed performance with experimental results of the scale-1 BO-105 rotor and the model 7A rotor assuming rigid blades shows a significant overestimation of rotor thrust and power. An easy and efficient way to account for the blade elasticity in torsion is then described. The new aeroelastic computations show much better agreement with experiment, especially for the hingeless BO-105 rotor, even if the figures of merit are underestimated for a given thrust coefficient, it is finally shown that accounting for a laminar-turbulent boundary layer (instead of a fully turbulent boundary layer) in the Navier-Stokes code significantly increases the estimated figure of merit, thus improving the correlation between computations and experiment.
机译：本文基于雷诺平均Navier-Stokes方程的分辨率，采用两种数值方法（DLR代码FLOWer和ONERA代码CANARI）来计算直升机旋翼在悬停时的性能。将比例计算的性能与比例为1的BO-105转子和模型7A转子（假定为刚性叶片）的实验结果进行比较，表明转子推力和功率明显过高。然后描述一种简单有效的方法来考虑叶片在扭转中的弹性。新的气动弹性计算显示出与实验更好的一致性，特别是对于无铰链的BO-105转子，即使在给定推力系数的情况下，品质因数被低估了，最终也表明了层流湍流边界层的存在（而不是Navier-Stokes代码中的完全湍流边界层）可显着提高估计的品质因数，从而改善计算与实验之间的相关性。

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