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 .
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. [
出处
《计算物理》
CSCD
北大核心
2002年第5期383-387,共5页
Chinese Journal of Computational Physics
基金
河海大学科技创新基金资助项目
