南京航空航天大学学报（英文版）2007，Vol.24Issue(3)：211-217,7.
平面COUETTE流动的湍流斑研究
STUDY ON TURBULENT SPOTS IN PLANE COUETTE FLOW
摘要
Abstract
Turbulent spots play a key role in the formation of the turbulence and the transition. The generation and evolution of turbulent spots using the wall impulse model in the plane Couette flow are studied by direct numerical simulation of Navier-Stokes equations. A group of three-dimensional coupling compact difference schemes with high accuracy and high resolution is used in the numerical calculation. The important characteristics of turbulent spots based on the results of examples are analyzed, including the formation of random pulse, the generation of Reynolds stress, the growth of disturbance amplitude, and the continuous change of spot shape, especially the complex evolution process of the streamwise vortices. Computational results confirm that basic properties of turbulent spots in the laminar flow are similar to those in the turbulent flow.关键词
湍流斑/流向涡/Couette流动/直接数值模拟Key words
turbulent spot / streamwise vortex / Couette flow / direct numerical simulation分类
航空航天引用本文复制引用
陈林,唐登斌..平面COUETTE流动的湍流斑研究[J].南京航空航天大学学报（英文版）,2007,24(3):211-217,7.基金项目
国家自然科学基金(10772082)资助项目.Supported by the National Natural Science Foundation of China (10772082). （10772082）
