空气动力学学报2011，Vol.29Issue(5)：628-633,6.
基于CFD技术的脊状表面湍流流场特性研究
Turbulent flow field characteristic research about riblet surface based on CFD technique
摘要
Abstract
Numerical simulation about surface with a series of different size streamwise riblet structure has been carried out in turbulent flow by Computational Fluid Dynamics ( CFD) technique. Reynolds stress equation model is a-dopted in the simulation process and full developed turbulent inlet boundary is set by program. Results are obtained from comparison between smooth and riblet surface. The streamwise vortex near riblet structure is an important reason of drag-reduction or drag-increase about riblet surface. The streamwise vortex changes flow field structure near wall and influences Reynolds stress in boundary layer near-wall region and wall shear stress. Then phenomenon of drag-reduciton or drag increase appears on riblet surface.关键词
CFD/雷诺应力/脊状表面/流向涡Key words
CFD/Reynolds stress/riblet surface/streamwise vortex分类
航空航天引用本文复制引用
刘占一,宋保维,黄桥高,胡海豹..基于CFD技术的脊状表面湍流流场特性研究[J].空气动力学学报,2011,29(5):628-633,6.基金项目
国家自然科学基金重点项目(50835009) （50835009）
国家自然科学基金(51109178) （51109178）
陕西省自然科学基础研究计划(2010JQ1009) （2010JQ1009）
