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A magneto-bioconvective and thermal conductivity enhancement in nanofluid flow containing gyrotactic microorganism
Case Studies in Thermal Engineering ( IF 6.8 ) Pub Date : 2020-12-15 , DOI: 10.1016/j.csite.2020.100809
Ziyad A. Alhussain , A. Renuka , M. Muthtamilselvan

The current article scrutinizes the magneto-bioconvective of nanofluid flow through a rotating cone using Cattaneo-Christov heat flux model. Additionally, we analyzed about cross diffusion (thermo-diffusion, diffusion-thermo), porous medium, Stefan blowing and Navier slip effects respectively. The governing equations are converting into system of self-similar ordinary differential equations by using suitable transformation. A parametric study focusing the impact of involved parameters on different fields such as motile microorganisms density, nanoparticle concentration, temperature and (swirl, tangential) velocities are plotted via graphs along with the motile microorganisms density numbers, Sherwood number and local Nusselt number are analyzed through table. As a matter of fact is temperature field declined for increasing thermal relaxation parameter γ. An increase in magnetic parameter M resembles to diminish in energy field. The suction of wall is noted for different number of when flow of swirl is reduce meanwhile injection blowing reveals conversely. The swirl velocity field diminishes to free stream from wall (cone surface) with every numbers of Nr including for stationary cone (Nr=0). Further, Dufour (Du) and Soret (Sr) number have entirely reverse behavior on temperature and nanoparticle concentration fields.



中文翻译:

含回旋微生物的纳米流体流中的磁-生物对流和热导率增强

当前文章使用Cattaneo-Christov热通量模型研究了通过旋转锥的纳米流体的磁-生物对流。此外,我们分别分析了交叉扩散(热扩散,扩散热),多孔介质,Stefan吹塑和Navier滑移效应。通过适当的变换,将控制方程转换为自相似的常微分方程组。通过图表绘制参数研究,重点研究涉及参数对不同领域的影响,例如运动微生物的密度,纳米颗粒浓度,温度和(旋流,切线)速度,并通过分析运动微生物的密度数,Sherwood数和局部Nusselt数表。实际上,为了增加热弛豫参数γ,温度场下降了。磁参数M的增加类似于能量场的减小。反之,旋流减少时,壁的吸力会随着旋流的减少而变化。旋流速度场减小,从壁(圆锥表面)释放的气流每增加一个ñ[R 包括用于固定锥 ñ[R=0。此外,杜福尔(Dufour)和索雷特(Sr)数在温度和纳米粒子浓度场上具有完全相反的行为。

更新日期:2020-12-20
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