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Thermodynamic second law analysis of magneto-micropolar fluid flow past nonlinear porous media with non-uniform heat source
Propulsion and Power Research ( IF 5.4 ) Pub Date : 2020-06-30 , DOI: 10.1016/j.jppr.2020.03.004
E.O. Fatunmbi , S.O. Salawu

This study analyzes the second law of thermodynamic for entropy generation in an irreversible hydromagneto-micropolar flow system with non-homogenous heat generation. The non-symmetric microstructure fluid flow past a stretching sheet with saturated porous non-linear media under magnetic field influence. Ignoring the fluid particle deformation, the microstructure is assumed rigid with the viscous suspended medium. The reduced dimensionless nonlinear formulated model is computationally coded and solved to obtain solutions for the entropy volumetric production, Bejan number and heat transfer magneto-micropolar fluid. The parameter dependent solutions for the flow characteristics and irreversibility processes are plotted and discussed. It is revealed from the study that minimization of entropy generation in a magneto-micropolar flow system is possible by improving the thermodynamic equilibrium with low material variables, viscosity and hysteresis magnetic. Also, it is seen that the terms that encourage internal heat generation reduces the micropolar fluid viscosity in the system.



中文翻译:

磁-微极流体流过非均匀热源的非线性多孔介质的热力学第二定律分析

这项研究分析了具有非均质生热的不可逆水磁微极流动系统中熵产生的热力学第二定律。非对称微结构流体在磁场作用下流过带有饱和多孔非线性介质的拉伸片。忽略流体颗粒的变形,微观结构被假定为具有粘性悬浮介质的刚性。对简化的无量纲非线性公式化模型进行了计算编码和求解,从而获得了用于熵体积产生,Bejan数和传热磁微极性流体的解决方案。绘制并讨论了流动特性和不可逆过程的参数相关解。从研究中可以看出,通过改善具有低材料变量,粘度和磁滞磁滞的热力学平衡,可以使磁微极流动系统中的熵产生最小化。另外,可以看出,促进内部热量产生的术语降低了系统中的微极性流体粘度。

更新日期:2020-06-30
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