An Aeroelastic Harmonic Balance Solver Using High-Order CFD
An Aeroelastic Harmonic Balance Solver Using High-Order CFD
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发表时间：
2014
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通讯作者：
W. Yao;S. Marques
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作者：
W. Yao;S. Marques
摘要：将高阶MP格式与HB框架相结合，用于极限环振荡（LCOs）预测，以降低计算成本。这项工作在很大程度上依赖于以前的工作中提出的LCO计算的新方法[1]。采用高阶MP格式实现的HB求解器或高阶HB求解器首次通过AGARD CT 5案例的强迫运动进行了演示，并证明在升力/力矩系数以及流场方面具有显着的精度提高。二维气动弹性系统的算例表明，高阶HB求解器能够在粗网格条件下准确预测LCO的幅值和频率，比二阶HB求解器快2倍以上。
Abstract: The effort integrates high order MP scheme into HB framework for Limit Cycle Oscillations (LCOs) prediction, with the goal of computational cost reduction. The work heavily relies on a novel approach for LCOs computation presented in previous work [1]. The HB solver with high order MP scheme implementation or high order HB solver is first demonstrated by forced motion, AGARD CT5 case, and proven to have significant accuracy improvement in terms of lift/moment coefficients as well as flow field. A two-dimensional aero-elastic system further proves that high order HB solver is capable of predicting LCOs amplitude and frequency accurately with coarse grid, and at least two times faster than 2 order HB solver.