摘要
对翼型表面脊状结构进行了数值仿真研究,初步发现了翼型表面脊状结构的减阻特性,并进一步研究了间隔对于翼型表面脊状结构减阻效果的影响规律。针对翼型表面脊状结构的特点,在数值计算过程中对其计算域、计算网格及流动参数进行了合理的处理。结果表明:脊状结构在翼型表面仍然具有很好的减阻效果,其表面边界层内湍流强度、湍动能明显低于光滑表面;有间隔的脊状结构减阻效果优于无间隔的脊状结构,间隔大小与脊状结构尺寸相当时,减阻效果最佳。
Riblet structure on airfoil has been studied by numerical simulation.The drag reduction characteristic of riblet structure is found,then the space＇s influence law to riblet structure＇s drag reduction effect is investigated ulteriorly.According to the characteristic of riblet structure,computation region,grids and flow parameters are dealt with reasonably.Results are as follows.Riblet structure still has good drag reduction effect on airfoil.Turbulent intensity and turbulent kinetic energy of boundary layer on riblet surface is lower than smooth surface obviously.Riblet structure with spacing has better drag reduction effect than that without spacing.Drag reduction effect reaches the best while the spacing size is equal to riblet structure.
出处
《计算力学学报》
EI
CAS
CSCD
北大核心
2010年第5期913-918,共6页
Chinese Journal of Computational Mechanics
基金
陕西省自然科学基础研究计划(2010Jl1009)
国家自然科学基金重点(50835009)
西北工业大学科技创新基金(2008KJ02012)资助项目
关键词
翼型
脊状结构
减阻
airfoil
riblet structure
drag reduction
