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A Comparison of CFD Hover Predictions for the Sikorsky S-76 Rotor

机译:西科斯基S-76转子CFD悬停预测的比较

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Hover performance calculations are performed for the S-76 model-scale rotor using different Computational Fluid Dynamics solvers to assess the variability in predictions. Time-accurate Navier-Stokes calculations are performed using HPCMP CREATE™-AV Helios with OVERFLOW and FUN3D as near-body solvers, and using the standalone OVERFLOW solver. Different modeling options are exercised including structured and unstructured meshes for the blades, adaptive mesh refinement (AMR) in the blade mesh, AMR in the wake mesh, and inviscid and detached eddy simulation (DES) modeling in the wake. Rotor performance, blade airloads, and wake geometry from the different calculations are compared to assess the variability.
机译:使用不同的计算流体动力学求解器为S-76模型比例的转子执行悬停性能计算,以评估预测的变化性。使用带有OVERFLOW和FUN3D的HPCMP CREATE™-AV Helios作为近身求解器,并使用独立的OVERFLOW求解器,可以进行时间精确的Navier-Stokes计算。行使不同的建模选项,包括叶片的结构化网格和非结构化网格,叶片网格中的自适应网格细化(AMR),尾流网格中的AMR以及尾流中的无粘性和分离涡模拟(DES)建模。比较了来自不同计算的转子性能,叶片空载和尾流几何形状,以评估可变性。

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