北京航空航天大学学报 ›› 2012, Vol. 38 ›› Issue (10): 1271-1274.

• 论文 •    下一篇

使用Gao-Yong湍流方程计算翼体角偶流动

高歌, 江立军, 高琳   

  1. 北京航空航天大学 能源与动力工程学院, 北京 100191
  • 收稿日期:2011-10-26 出版日期:2012-10-30 发布日期:2012-10-30
  • 基金资助:
    北京航空航天大学"凡舟"青年科研基金资助项目(20110403)

Calculation of wing-body junction flow using Gao-Yong turbulence equations

Gao Ge, Jiang Lijun, Gao Lin   

  1. School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2011-10-26 Online:2012-10-30 Published:2012-10-30

摘要: Gao-Yong湍流方程基于侧偏统计平均方法保留了湍流脉动量的一阶统计信息,并引入加权漂移速度对称性及正交各向异性,导出漂移流连续方程、动量方程和机械能方程,最后依据湍流物理的唯象论,使用动量传输链概念模化封闭了整个方程组.大量算例验证了此方程对广泛范围的复杂湍流问题的适定性.为了进一步的工程应用,将其加入开源计算流体力学软件OpenFOAM(Open Field Operation and Manipulation)中,并就翼体角偶流动进行了数值模拟.翼体角偶流动具有三维分离、马蹄涡等十分复杂的流动特征,通过与实验测量结果的对比研究表明,Gao-Yong湍流方程不论在定性还是定量上,都成功捕捉到这类复杂流动现象的主要特征,得到了令人满意的结果.

Abstract: The derivation of Gao-Yong turbulence equations was based on a partial statistical average scheme proposed in the past by the first author in an attempt to capture the drift flow, a first-order statistical moment of turbulent fluctuations. Continuity and momentum equations of turbulent fluctuations were obtained as a result of this valuable first statistical information. Orthotropic turbulence and momentum transfer chain were formulated in the modeling of correlation terms, eventually, led to a complete set of equations of turbulent flow with no empirical coefficients and wall functions. Numerical simulations in the past preliminarily verified the adaptability of Gao-Yong equations to a wide range of complex benchmark turbulent flows. In order to further application of these equations to engineering flows, the Gao-Yong turbulence equations were implemented into OpenFOAM and applied to the calculation of wing-body junction flow. The wing-body junction flow involves very complex feathers, such as a 3-D separation and a horseshoe vortex. The results of numerical simulation of this flow compared to experimental data show that all these main characteristics have been captured, both qualitatively and quantitatively.

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