计算物理 ›› 2010, Vol. 27 ›› Issue (3): 375-380.

• 研究论文 • 上一篇    下一篇

凹腔非定常特性的数值模拟

马小亮, 杨国伟   

  1. 中国科学院力学研究所高温气体动力学重点实验室, 北京 100190
  • 收稿日期:2009-02-24 修回日期:2009-07-07 出版日期:2010-05-25 发布日期:2010-05-25
  • 作者简介:马小亮(1981-),男,辽宁大连,博士生,主要从事计算流体力学研究.

Simulation of Unsteady Cavity Flow

MA Xiaoliang, YANG Guowei   

  1. LHD, Institute of Mechanics, Chinese Academy of Science, Beijing 100190, China
  • Received:2009-02-24 Revised:2009-07-07 Online:2010-05-25 Published:2010-05-25

摘要: 采用基于Menter SST两方程湍流模型的DES方法,数值模拟开式凹腔在跨声速条件下的非定常流动特性.计算凹腔底部和后壁面上的点的声压级频谱以及总声压级,证明在第二噪声模态上的声压级最大.

关键词: DES, 凹腔, 声压级, 非定常

Abstract: Menter SST based detached eddy simulations (DES) is performed for transonic flow over an open cavity to study unsteady flow and acoustic fields.Sound pressure level (SPL) spectra and overall sound pressure level(OASPL) on surface of the cavity floor and the cavity back wall are computed.It shows that the second mode is dominant with the largest magnitude in SPL.

Key words: detached eddy simulations, cavity, sound pressure level, unsteady flow

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