肋条在湍流减阻中的数值模拟  

Numerical Simulation of Horizontal Riblets in Turbulent Drag Reduction

作　　者：史小军[1] 王树立[1] 李恩田[1] 朱莹[1] 王海秀[1] 

机构地区：[1]江苏工业学院江苏省油气储运技术重点试验室,江苏常州213016

出　　处：《管道技术与设备》2008年第1期8-10,19,共4页Pipeline Technique and Equipment

基　　金：江苏省科技厅资助项目(BS2005020);江苏省油气储运技术重点实验室资助项目(cy0505)

摘　　要：采用标准k-ε湍流模型,利用PHOENICS3.6软件数值求解,考察了带有下凹的横向肋条的湍流边界层流动和黏性阻力,通过数值计算,考察湍流减阻性能,表明在充分发展的湍流场中,横向肋条的减阻效果是很明显的。探讨了沟槽面的减阻机理,提出下凹的肋条引起了边界层的向下移动,使平板面处的速度损失减少,达到了减阻的效果。Based on the PHOENICS 3.6 software,by adopting the standard k-ε turbulent model,the turbulent boundary layer flow and stickiness resistance of the concave-down horizontal riblets,as well as,the turbulent drag reduction capability by numerical calculation is investigated.Indicating that in the full,developed turbulent flow field,the drag reduction effectiveness of the horizontal riblets is obvious.The mechanism of the groove＇s surface drag reduction is discussed,the idea that the concave-down riblets causes the turbulent boundary layer＇s downward migration brough forward,the loss of speed on the surface of the level plank loweved,and the drag reduction effectiveness achieved.

关 键 词：PHOENICS 数值模拟 横向肋条 湍流减阻 

分 类 号：TV134[水利工程—水力学及河流动力学]