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在低湍流度水槽里 ,利用片光源显示了平板气液两相湍流边界层内气泡流的流场结构 ,研究了平板安装位置、来流速度、喷气方式等参数对湍流边界层内气泡流的影响 .利用激光测速技术测量了平板水平放置时气泡流最外缘处的水平速度及厚度 .结果表明 :平板喷气减阻的原因在于喷气改变了平板湍流边界层的流动结构 ,抑制了湍流
In the low turbulence flume, the flow field structure of bubble flow in the turbulent boundary layer of gas-liquid two-phase plate is shown by the sheet light source. The effects of the plate installation position, flow velocity and jet mode on the bubble flow in the turbulent boundary layer The velocity and thickness of the bubble at the outermost edge of the plate were measured by laser velocimetry.The results showed that the jet drag reduction was caused by the fact that the jet changed the flow structure of the turbulent boundary layer and inhibited the turbulence