计算物理 ›› 2013, Vol. 30 ›› Issue (2): 169-179.

• 论文 • 上一篇    下一篇

基于层流动能湍流模型的数值模拟方法

甘文彪, 周洲   

  1. 西北工业大学 无人机特种技术重点实验室, 西安 710065
  • 收稿日期:2012-05-21 修回日期:2012-10-14 出版日期:2013-03-25 发布日期:2013-03-25
  • 作者简介:甘文彪(1985-),男,湖南邵阳,博士,研究方向为计算流体力学和飞行器气动优化设计,E-mail:ganhope@126.com
  • 基金资助:
    国家自然科学基金(11202162);国家"863"预研基金(9140A25010312HK0301)资助项目

Reynolds-averaged Navier-Stokes Method with Laminar Kinetic Energy Turbulent Model

GAN Wenbiao, ZHOU Zhou   

  1. Science and Technology Key Laboratory on UAV, Northwestern Polytechnical University, Xi'an 710065, China
  • Received:2012-05-21 Revised:2012-10-14 Online:2013-03-25 Published:2013-03-25

摘要: 从层流动能出发提出数值模拟原则;综合考虑自然、旁路和分离流转捩的因素构建实用的层流动能湍流模型,结合预处理和基本求解技术发展出适于转捩流动的数值模拟方法和程序.针对预处理技术,以Weiss-Smith矩阵为基础,考虑湍流粘性的影响;针对基本离散格式和边界条件,结合模型方程进行对角占优强化等特殊处理.最后通过平板边界层和典型翼型,特别是低雷诺数翼型的数值模拟,验证数值方法的有效性和鲁棒性.算例表明本文的方法能够为求解更复杂的流动提供参考.

关键词: 层流动能湍流模型, 转捩, 低雷诺数, 预处理技术, 翼型

Abstract: We set up simulation principles,and build simulation method and codes with laminar kinetic energy turbulent model,in which natural,bypass and separation translation are considered.Time derivatives of three-dimensional Navier-Stokes equations are preconditioned with Weiss-Smith preconditioning matrix.Effect of turbulent eddy viscosity is considered.Time split,spatial split and boundary conditions are specially treated to diagonal dominant matrix.Boundary layer and airfoil flow simulations are available.It is shown that the method is efficient and robust for basic aerodynamic flows.It provides reference to more complex flows.

Key words: laminar kinetic energy turbulent model, transition, lower Reynolds, preconditioning technique, airfoil

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