Computational Investigation of a Full-Scale Proprotor Hover Performance and Flow Transition

Sheng Chunhua; Zhao Qiuying; Hill Matthew

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Computational Investigation of a Full-Scale Proprotor Hover Performance and Flow Transition

机译：比例尺Proprotor悬停性能和流量转换的计算研究

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摘要

The full-scale XV-15 proprotor hover performance and flow transition phenomena are numerically investigated using an unsteady Reynolds-averaged Navier-Stokes flow solver. The rotor figure of merit is predicted over a range of blade collective angles, and computed skin frictions on the rotor surface are compared with the wind-tunnel experimental data. A grid resolution study is performed to investigate the impact of the mesh resolution on hover predictions using a baseline mesh and a refined mesh. The Langtry-Menter local correlation-based transition model is used to predict the skin friction and transition onset associated with the XV-15 rotor under the framework of both the Spalart-Allmaras one-equation turbulence model and Menter's shear-stress transport two-equation model. Computational results show satisfactory predictions for the XV-15 hover performance and transition phenomena and offer an improved understanding of complicated rotor flow physics for the XV-15 proprotor.

机译：使用不稳定的雷诺平均Navier-Stokes流量求解器对XV-15 proprotor的满量程悬停性能和流动过渡现象进行了数值研究。可以在一定范围的叶片共同角度上预测转子的品质因数，并将转子表面上的计算出的蒙皮摩擦力与风洞实验数据进行比较。进行了网格分辨率研究，以研究使用基线网格和精炼网格的网格分辨率对悬停预测的影响。在Spalart-Allmaras一方程湍流模型和Menter剪应力传递两方程模型的框架下，使用基于Langtry-Menter局部相关的过渡模型来预测与XV-15转子相关的皮肤摩擦和过渡开始。模型。计算结果显示了对XV-15悬停性能和过渡现象的令人满意的预测，并为XV-15 proprotor提供了对复杂转子流物理学的更好理解。

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来源
《Journal of Aircraft》 |2018年第1期|122-132|共11页
作者
Sheng Chunhua; Zhao Qiuying; Hill Matthew;
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作者单位

Univ Toledo, Dept Mech Ind & Mfg Engn, Toledo, OH 43606 USA;

Univ Toledo, Dept Mech Ind & Mfg Engn, Toledo, OH 43606 USA;

Bell Helicopter Textron Inc, Engn 3, Aerodynam, Ft Worth, TX 76118 USA;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
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Computational Investigation of a Full-Scale Proprotor Hover Performance and Flow Transition

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