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Thermally developed Cattaneo-Christov Maxwell nanofluid over bidirectional periodically accelerated surface with gyrotactic microorganisms and activation energy
Alexandria Engineering Journal ( IF 6.8 ) Pub Date : 2020-09-12 , DOI: 10.1016/j.aej.2020.08.051
Iftikhar Ahmad , Samaira Aziz , Nasir Ali , Sami Ullah Khan , M. Ijaz Khan , Iskander Tlili , Niaz B. Khan

The current communication discloses the time dependent three-dimensional thermally developed flow of Maxwell nanofluid containing gyrotactic microorganisms. The flow is generated by bidirectional periodically moving and accelerated configuration. Moreover, heat transportation investigation is characterized by utilizing modified Cattaneo-Christov expressions. The formulated nonlinear partial differential equations are rendered into dimensionless form by using apposite transformations and then elucidated analytically via homotopic technique. The impact of diverse prominent parameters on dimensionless velocities, temperature, nanoparticles concentration and motile microorganism profiles are deliberated graphically. The observations reveal that the reduction in both components of velocity occurs due to magnetic parameter. The velocity has decreasing tendency in horizontal direction for bioconvected Rayleigh number and buoyancy ratio constant. It is further acknowledged that motile microorganism distribution leads to be decreased for enhancement in bioconvected Lewis and Peclet numbers, while opposing behavior is noticed for thermophoresis constant.



中文翻译:

在双向周期性加速表面上通过旋回微生物和活化能对Cattaneo-Christov Maxwell纳米流体进行热显影

当前的通讯公开了包含旋涡性微生物的麦克斯韦纳米流体随时间的三维热显影流动。流量是通过双向周期性移动和加速配置生成的。此外,热传输研究的特征是利用修饰的Cattaneo-Christov表达式。通过使用适当的变换,将制定的非线性偏微分方程转化为无量纲形式,然后通过同位技术进行解析说明。图形化地研究了各种重要参数对无量纲速度,温度,纳米颗粒浓度和运动微生物谱的影响。观测结果表明,速度的两个分量的减小都是由于磁参数而发生的。对于生物对流瑞利数和浮力比常数,速度在水平方向上具有减小的趋势。进一步公认的是,运动性微生物分布导致减少,以增强生物对流的路易斯和佩克雷特数,而对于热泳常数则观察到相反的行为。

更新日期:2020-09-13
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