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首页> 外文期刊>International Journal of Heat and Mass Transfer >Mass transfer induced slip effect on viscous gas flows above a shrinking/stretching sheet
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Mass transfer induced slip effect on viscous gas flows above a shrinking/stretching sheet

机译：传质引起的对收缩/拉伸片材上方的粘性气流的滑移效应

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摘要

Viscous gas flows above linearly shrinking and stretching sheets with mass transfer are studied via theoretical analysis. Effect of mass-transfer induced slip at a moving surface on gas flows, which has not been considered in all previous studies, is systematically investigated. Net mass-transfer on a moving surface is demonstrated by a newly developed slip flow model (Wu, 2014) to introduce a gas slip velocity component in addition to the slip velocity component due to velocity shearing considered in the original 1st or 2nd order slip flow models. Our results show that mass suction induces a slip velocity against the sheet motion. The competition between flow driven effects of mass-suction induced slip and sheet motion significantly expands the available solution space, and adds to the solution space one more solution sub-region, which is absent when mass-suction induced slip is not considered. Mass-suction induced slip may even achieve a dominant flow driven role by totally reversing the flow direction of adjacent gases to flow against the sheet motion. Mass-injection induced slip enhances the flow driven effect of the moving sheet.
机译：通过理论分析研究了线性传热和拉伸传质板上方的粘性气体流动。系统地研究了尚未在所有先前研究中考虑的，在运动表面上传质引起的滑移对气流的影响。通过新开发的滑流模型（Wu，2014）证明了在运动表面上的净传质，该模型除了引入了原始一阶或二阶滑流中由于速度剪切引起的滑移速度分量外，还引入了气体滑移速度分量。楷模。我们的结果表明，吸力会引起滑移速度，从而阻止纸张运动。吸力引起的滑移的流动驱动效应与薄片运动之间的竞争极大地扩展了可用的解空间，并向溶液空间增加了一个溶液子区域，这在不考虑吸力引起的滑移时是不存在的。吸料引起的滑移甚至可以通过完全逆转相邻气体的流动方向来逆着薄片运动流动而达到主要的流动驱动作用。大量注入引起的滑移增强了移动板的流动驱动效果。

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