基于滑移理论的超疏水表面减阻性能分析  

Analysis on Drag Reduction of Super-hydrophobic Surface Based on Slip Theory

作　　者：于广锋[1] 刘宏伟[2] 

机构地区：[1]北京航空航天大学,北京100191 [2]中国科学院声学研究所声场声信息国家重点实验室,北京100190

出　　处：《摩擦学学报》2013年第2期191-195,共5页Tribology

基　　金：国家自然科学基金重点项目(50835009)资助~~

摘　　要：采用滑移理论计算和数值模拟方法研究超疏水表面的减阻性能.层流流动状态的数值模拟和理论计算结果的一致性较好,并可证明滑移速度与通道内流体速度之比与无量纲压降比的数量级相当;湍流状态的数值仿真结果表明,在目前可实现的滑移速度范围内,超疏水表面对水下航行器的流体阻力影响不显著.The drag reduction of super-hydrophobic surface is studied with theoretical computation and numerical simulation methods based on slip theory.The difference between theoretical computation and numerical simulation for laminar flow was minor,and the drag reduction proved to be approximately equal to the ratio of slip velocity to bulk velocity.Considering the realized slip velocity range,the numerical simulation results for turbulent flow show that the drag coefficient of underwater vehicle model was not obviously influenced by the super-hydrophobic surface in turbulent flow.

关 键 词：超疏水 减阻 滑移速度 无量纲压降比 

分 类 号：TH117.2[机械工程—机械设计及理论]