计算物理 ›› 2002, Vol. 19 ›› Issue (5): 383-387.

• 论文 • 上一篇    下一篇

湍流边界层近壁区多个相干结构的数值模拟

陆昌根   

  1. 河海大学水文水资源及环境学院, 江苏 南京 210098
  • 收稿日期:2001-03-12 修回日期:2001-09-03 出版日期:2002-09-25 发布日期:2002-09-25
  • 作者简介:路昌根(1961-),男,江苏丹阳,教授,博士,主要从事湍流及流动稳定性力面的研究.
  • 基金资助:
    河海大学科技创新基金资助项目

NUMERICAL SIMULATION OF MANY-COHERENT STRUCTURES IN THE WALL REGION OF TURBULENT BOUNDARY LAYER

LU Chang-gen   

  1. College of Water Resources and Environment, Hehai University, Nanjing 210098, China
  • Received:2001-03-12 Revised:2001-09-03 Online:2002-09-25 Published:2002-09-25

摘要: 从流动稳定性理论中的一般共振三波概念出发,提出一种湍流边界层近壁区多个相干结构的理论模型,采用高精度差分格式和Fourier谱展开相结合的方法,求解三维不可压Navier-Stokes方程,直接数值模拟近壁湍流多个相干结构的演化问题.并将得到的湍流边界层近壁区多个相干结构的数值演化特性与实验观察到的特性进行了比较.

关键词: 多个相干结构, 数值模拟, 湍流边界层

Abstract: A model of many-coherent structures is proposed using the idea of resonant triads in the theory of hydrodynamic stability.The evolution of the many-coherent structures in the wall region of a turbulent boundary layer is studied by combining the finite difference of high accuracy and the Fourier spectral hybrid method for solving the three dimensional Navier-Stokes equations.Compared with the experimental observations,some numerical results are in reasonable agreement.

Key words: many-coherent structure, numerical simulation, turbulent boundary layer

中图分类号: