利用微气泡层减少平板阻力的边界层模型计算

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，对给定的一系列气泡喷射速度参数和流体特性参数计算了微气泡状态下平板的摩擦阻力，结果显示微气泡对平板有明显减阻效果；最后给出了气体边界层的速度分布和剪切应力分布。

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

The smooth plate in the flow is chosen as an example; the simple models for gas and liq uid boundary layer of microbubbles over the surface are established. Then the classical laminar boundary-layer theory is adopted and solutions have been carried out for a range of values of blowing velocity and of a fluid property parameter. The results show that the microbubble sheet has the remarkable effect on the resistance of the plate. Finally the velocity distribution and shear distribu tion in the gas layer are given.