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首页> 外文期刊>Journal of enhanced heat transfer >PERISTALTIC MOTION OF NON-NEWTONIAN FLUID WITH VARIABLE LIQUID PROPERTIES IN A CONVECTIVELY HEATED NONUNIFORM TUBE: RABINOWITSCH FLUID MODEL
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PERISTALTIC MOTION OF NON-NEWTONIAN FLUID WITH VARIABLE LIQUID PROPERTIES IN A CONVECTIVELY HEATED NONUNIFORM TUBE: RABINOWITSCH FLUID MODEL

机译：非牛顿液体具有可变液体性能的非牛顿流体的蠕动运动：Rabinowitsch流体模型

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摘要

This paper investigates the effects of variation in viscosity and thermal conductivity on the peristaltic mechanism of Rabinowitsch fluid through a nonuniform tube. The convective surface conditions and wall properties are taken into account. The governing equations of motion, momentum, and energy are rendered dimensionless and are solved using long wavelength and small Reynolds number approximations. The series solution technique is employed to solve the resulting nonlinear temperature equation. The effects of relevant parameters on physiological quantities of interest are analyzed graphically, and the validation of the present model with the existing literature has been presented through graphs. The outcomes of the study reveal that an increase in the value of variable viscosity and thermal conductivity enhances the velocity and temperature profiles for dilatant, Newtonian, and pseudoplastic fluid models. Further, an increase in the value of variable viscosity enhances the skin friction coefficient and Nusselt number. Moreover, the presence of variable viscosity diminishes the volume of the trapped bolus.
机译：本文研究了粘度变化和热导率的影响通过非均匀管的Rabinowitsch流体蠕动机理。对流表面条件和墙壁性质被考虑在内。运动，动量和能量的控制方程被呈现无量纲，并使用长波长和小雷诺数近似来解决。采用系列解决方案技术来解决所得到的非线性温度方程。图示地分析了相关参数对生理量的影响，并通过图表介绍了现有文献的本模型的验证。该研究的结果表明，可变粘度和导热率值的增加提高了膨胀剂，牛顿和假塑性流体模型的速度和温度曲线。此外，可变粘度的值的增加增强了皮肤摩擦系数和良好的数量。此外，可变粘度的存在减少了被困推注的体积。

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