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Pulsating flow of electrically conducting couple stress nanofluid in a channel with ohmic dissipation and thermal radiation – Dynamics of blood
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering ( IF 2.4 ) Pub Date : 2021-06-18 , DOI: 10.1177/09544089211025177
Rajamani Somasundaram 1 , Anala Subramanyam Reddy 1
Affiliation  

The present work discloses the magnetohydrodynamic pulsating flow of blood-carrying nanoparticles in a channel with the viscous dissipation and Joule heating effects. Couple stress fluid is treated as blood which is the base fluid. The Maxwell Garnett model for thermal conductivity of nanofluid is considered. The thermal radiation and heat source/sink impacts are taken into account. Analytical expressions for dimensionless flow variables are obtained by employing the perturbation method. The impact of active parameters on flow variables is graphically presented. The obtained results show that the velocity of nanofluid increases with an increment in frequency parameter, whereas it decreases for a rise in Hartmann number, nanoparticles volume fraction and couple stress parameter. There is an enhancement in temperature of nanofluid with increasing viscous dissipation, whereas there is a decrease in temperature with an increase in the applied magnetic field. The Nusselt number rises with an enhancement in volume fraction of nanoparticles and Hartmann number at both the walls. Further, the validity of present results is assured by the comparison of analytical and numerical outcomes with an excellent harmony.



中文翻译:

具有欧姆耗散和热辐射的通道中导电偶应力纳米流体的脉动流动——血液动力学

目前的工作公开了具有粘性耗散和焦耳热效应的通道中载血纳米粒子的磁流体动力学脉动流。夫妻压力流体被视为基础流体的血液。考虑了纳米流体热导率的 Maxwell Garnett 模型。考虑了热辐射和热源/散热器的影响。采用微扰法得到了无量纲流变量的解析表达式。活动参数对流量变量的影响以图形方式呈现。结果表明,纳米流体的速度随着频率参数的增加而增加,而随着哈特曼数、纳米颗粒体积分数和耦合应力参数的增加而减小。纳米流体的温度随着粘性耗散的增加而升高,而温度随着外加磁场的增加而降低。Nusselt 数随着纳米粒子体积分数和两个壁的 Hartmann 数的增加而增加。此外,通过将分析结果和数值结果进行非常和谐的比较,可以确保当前结果的有效性。

更新日期:2021-06-18
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