首页> 外文会议>IMECE2009;ASME international mechanical engineering congress and exposition >COMBINED EFFECTS OF NON-NEWTONIAN RHEOLOGY, CURVATURE AND FLUID INERTIA FORCES ON THE SQUEEZE FILM BEHAVIOUR
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COMBINED EFFECTS OF NON-NEWTONIAN RHEOLOGY, CURVATURE AND FLUID INERTIA FORCES ON THE SQUEEZE FILM BEHAVIOUR

机译:非牛顿流变学,曲率和流体惯性力对挤压膜行为的综合影响

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The laminar squeeze flow of couple-stress fluids between a flat circular disc and an axisymmetric curved disc of arbitrary shape is taken into consideration. Based on the modified lubrication theory and the microcontinuum theory, the problem is solved analytically. The combined effects of fluid inertia forces, curvature and non-Newtonian couple stresses on the squeeze film behaviour are investigated through the variations in the Reynolds number, curvature and the couple stress parameters. Each of these effects and their combinations show a significant enhancement in the squeeze film behaviour and these are studied through their effects on the squeeze film pressure and the load carrying capacity of the fluid film as a function of time. It is understood that the operating life of the squeeze film discs are lengthened, especially for larger couple stress parameters, larger Reynolds numbers and concave nature of the curved discs.
机译:考虑了平坦的圆盘和任意形状的轴对称弯曲盘之间的耦合应力流体的层流挤压流动。基于改进的润滑理论和微连续谱理论,可以解决该问题。通过雷诺数,曲率和耦合应力参数的变化,研究了流体惯性力,曲率和非牛顿耦合应力对挤压膜行为的综合影响。这些影响及其组合均显示出挤压膜性能的显着增强,并且通过它们对挤压膜压力和流体膜的承载能力(随时间变化)的影响进行了研究。可以理解的是,挤压膜片的使用寿命得以延长,尤其是对于较大的耦合应力参数,较大的雷诺数和弯曲的片的凹入性质。

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