Rotor Blade Response Based on CFD in the Frequency Domain
Rotor Blade Response Based on CFD in the Frequency Domain
复制标题
基于频域 CFD 的转子叶片响应
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
V. Murthy
中科院分区：
文献类型：
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作者：
Manish Kumar;V. Murthy
*†提出了一种确定前飞旋翼气动弹性响应的公式。采用基于频域的CFD分析方法，在多叶片坐标系下计算了定常周期状态下的气动力。CFD模型与转子的非线性有限元模型相耦合，也是在多叶片坐标系下。该公式非常通用，在计算中可以使用由RANS、欧拉或混合等方程控制的任何流体模型。对多叶片坐标的变换消除了除叶片通过频率以外的其他谐波，从而提高了该技术的效率。该公式正在计算机代码中实施，截至目前，频域中的CFD解决方案已通过与现有的实验和数值结果进行比较来验证。
*† A formulation to determine the aeroelastic response of a rotor in forward flight is presented. The aerodynamic forces arising in the steady periodic state have been calculated using a frequency domain based CFD analysis in multiblade coordinates. The CFD model is coupled with a nonlinear finite element model of a rotor also in multiblade coordinates. The formulation is quite general and any fluid model governed by equations such as RANS, Euler or Hybrid can be used in the computations. The transformation to multiblade coordinates leads to the cancellation of harmonics except at the blade passage frequencies, thereby increasing the efficiency of the technique. The formulation is being implemented in a computer code and as of today the CFD solution in the frequency domain has been validated by comparing with the available experimental and numerical results.