航空学报 > 1996, Vol. 17 Issue (5): 79-82

俯仰振荡翼型跨音速粘性绕流的数值计算

代捷, 刘千刚   

  1. 西北工业大学503教研室, 西安, 710072
  • 收稿日期:1995-01-10 修回日期:1995-07-04 出版日期:1996-10-25 发布日期:1996-10-25

COMPUTATION OF TRANSONIC VISCOUS FLOW AROUND A PITCHING AIRFOIL

Dai Jie, Liu Qiangang   

  1. Faculty 503, Northwestern Polytechnical University, Xi′an, 710072
  • Received:1995-01-10 Revised:1995-07-04 Online:1996-10-25 Published:1996-10-25

摘要: 以LU-TVD混合格式求解二维非定常湍流N-S方程,计算了绕1/4弦点振荡的翼型跨音速粘性绕流解,与实验结果吻合较好。通过取不同CFL数计算表明:在能得到非定常稳态解的情况下,取小CFL数更能真实地反映非定常时间历程,具有更高的可信度

关键词: 非定常流, N-S方程, 翼型数值分析

Abstract: A LU TVD scheme is applied to calculate the unsteady flow around a pitching oscillatory airfoil. The results given by this paper are in good agreement with experimental results. Application of different CFL numbers show that using less CFL number can describe the unsteady course more detaily and has higher reliability.

Key words: unsteady flow, N S equation airfoil profiles, numerical analysis

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