拉伸板上非牛顿混合纳米流体的磁流体动力三维流动的活化能、旋转和霍尔电流效应

Dr.V.Ramachandra Reddy Vaddemani, Yeddula Rameswara Reddy, Donti Ratnam Srinivasan
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引用次数: 0

摘要

纳米流体具有很高的热传导率,在工业上有重要用途,因此对研究人员来说非常重要。最近,一种新型纳米流体 "混合纳米流体 "被用于进一步提高传热速率。这种新的三维模型用于研究活化能、旋转和霍尔电流对拉伸板上非牛顿混合 Fe3O4/Al2O3 纳米流体流动的影响。通过相似变换,控制偏微分方程被转化为一组非线性常微分方程。对于该方程组,采用射击法生成数值解。通过数值和图形研究了各种入口参数对横向和纵向速度、温度、热流和表面剪应力的影响。在特定情况下,与之前的研究结果有很好的相关性,显示了本程序的收敛标准。此外,还通过图形和表格展示了相关参数的物理意义。观察结果表明,混合纳米流体的颗粒浓度会提高流体速度。此外,由于颗粒浓度的影响,散热的加入有利于提高流体温度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Activation energy, Rotational and Hall current Effects of Magnetohydrodynamic 3D flow of Non-Newtonian Hybrid Nanofluid over a Stretched Plate
Nanofluids are of great importance to researchers as they have significant uses industrially due to their high heat transfer rates. Recently, a new class of nanofluid, ‘‘hybrid nanofluid” is being used to further enhance the heat transfer rate. This new model in 3D is employed to examine the impact of activation energy, Rotational and hall current on a Non-newtonian hybrid Fe3O4/Al2O3 nanofluid flow over-stretched plate. Using similarity transformations, the controlling partial differential equations are turned into a set of nonlinear ordinary differential equations. For that system of equations, the shooting method is used to generate numerical solutions. The impact of various entry parameters on transversal and longitudinal velocities, temperature, heat flow and surface shear stress are studied numerically and graphically. A good correlation between the earlier studies is obtained in specific cases showing the convergence criteria of the present procedure. Further, the physical significance of the contributive parameters is presented through graphs and tables. The observation shows that the particle concentration for the hybrid nanofluid augments the fluid velocity. Moreover, the inclusion of dissipative heat favors enhancing the fluid temperature for the involvement of the particle concentration.
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