网格对声爆近场预测影响的数值研究

Boping Ma, Gang Wang, Zhijin Lei, Zhengyin Ye

科研成果: 期刊稿件文章同行评审

2 引用 (Scopus)

摘要

To investigate the influence of mesh property in nearfield sonic boom prediction, the over-pressures of several typical configurations are commutated and analyzed with an in-house Reynolds Average Navier-Stokes solver. The property of mesh alignment, mesh type and mesh distribution are analyzed based on the double cone configuration and the 69-degree Delta Wing Body configuration. The experimental data from wind tunnel are used as comparisons. The results show that the Mach cone aligned method has significant improvement to the accuracy for the prediction of sonic boom in nearfield. Both structured and un-structed mesh with a cylinder zone near the model can help to capture the distribution of the over-pressure, however, it is more convenient to use unstructured mesh when deal with complex configurations. The aspect ratio and circumferential spacing affect the captured shock wave peak value and the shapes. The accuracy of the prediction can be satisfied by carefully selecting these two factors. In the last, the summarized strategies for mesh generation are applied in the sonic boom prediction of a complex supersonic transport configuration, the Lockheed Martin 1021 to verify its practicability.

投稿的翻译标题Numerical Investigation of Influence of Mesh Property in Nearfield Sonic Boom Prediction
源语言繁体中文
页(从-至)865-874
页数10
期刊Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University
36
5
DOI
出版状态已出版 - 1 10月 2018

关键词

  • Computational fluid dynamics
  • Mesh property
  • Nearfield prediction
  • Sonic boom

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