微气泡层减阻的边界层模型计算  

Calculation of Microbubble Sheet Drag Reduction by a Model of Boundary Layer

作　　者：黄衍顺[1] 张丽君[1] 王震[1] 

机构地区：[1]天津大学建筑工程学院船舶工程系,教授300072

出　　处：《船舶工程》2004年第1期13-16,共4页Ship Engineering

摘　　要：以流体中光滑平板为例 ,建立微气泡层覆盖平板的气液简单边界层模型 ,采用平板层流理论 ,对给定的气泡喷射参数和流体特性参数计算了微气泡层状态下平板的摩擦阻力 ,结果显示微气泡层对平板有明显减阻效果 ;In the paper,a slippery plate in a flui d flow is chosen as an example,s imple models for gas and liquid boundary layer of microbubbles on the surface of the plate are established.And then by use of classical laminar boundary layer t heory,the friction drag in the condition of microbubbles is calculated for a ran ge of blowing velocity values and of fluid property parameters.The results show that the microbubble sheet has a remarkable effect on drag reduction of the plat e.Finally,a velocity distribution and shear distribution in the gas layer is giv en.

关 键 词：船舶动力学 微气泡层 减阻 边界层 气泡喷射参数 理论计算 流体特性参数 速度分布 剪切应力分布 

分 类 号：U661.1[交通运输工程—船舶及航道工程]