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Magnetized suspended carbon nanotubes based nanofluid flow with bio-convection and entropy generation past a vertical cone

机译：经过磁化悬浮的碳纳米管的纳米流体流具有垂直对流锥的生物对流和熵产生

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The captivating attributes of carbon nanotubes (CNT) comprising chemical and mechanical steadiness, outstanding electrical and thermal conductivities, featherweight, and physiochemical consistency make them coveted materials in the manufacturing of electrochemical devices. Keeping in view such exciting features of carbon nanotubes, our objective in the present study is to examine the flow of aqueous based nanofluid comprising single and multi-wall carbon nanotubes (CNTs) past a vertical cone encapsulated in a permeable medium with convective heat and solutal stratification. The impacts of heat generation/absorption, gyrotactic-microorganism, thermal radiation, and Joule heating with chemical reaction are added features towards the novelty of the erected model. The coupled differential equations are attained from the partial differential equations by exercising the local similarity transformation technique. The set of conservation equations supported by the associated boundary conditions are worked out numerically by employing bvp4c MATLAB function. The sway of numerous appearing parameters in the analysis on the allied distributions is scrutinized and the fallouts are portrayed graphically. The physical quantities of interest including Skin friction coefficient, the rate of heat and mass transfers are assessed versus essential parameters and their outcomes are demonstrated in tabulated form. It is witnessed that the velocity of the fluid decreases for boosting values of the magnetic and suction parameters in case of both nanotubes. Moreover, the density of motile microorganism is decreased versus larger estimates of bio-convection constant. A notable highlight of the presented model is the endorsement of the results by matching them to an already published material in the literature. A venerable harmony in this regard is achieved.
机译：碳纳米管（CNT）的引人入胜的属性包括化学和机械稳定性，出色的电导率和热导率，轻量级以及理化一致性，这使它们成为电化学器件制造中令人垂涎的材料。考虑到碳纳米管的这种令人兴奋的特征，我们在本研究中的目标是研究包含单壁和多壁碳纳米管（CNT）的水基纳米流体流过垂直圆锥体的情况，该圆锥体封装在对流热和稀释的可渗透介质中分层。热量产生/吸收，回转型微生物，热辐射和焦耳加热以及化学反应的影响增加了所建立模型的新颖性。通过使用局部相似度变换技术，从偏微分方程获得耦合的微分方程。通过使用bvp4c MATLAB函数以数值方式计算出了相关边界条件所支持的守恒方程组。详细分析了联盟分布分析中大量出现的参数，并对结果进行了图形化描绘。与基本参数相比，评估了包括皮肤摩擦系数，传热和传质速率在内的所需物理量，并以表格形式显示了其结果。可以看出，在两种纳米管的情况下，流体的速度都随着磁性和吸力参数的增加而降低。此外，与更大的生物对流常数估计值相比，运动微生物的密度降低了。提出的模型的一个显着亮点是通过将结果与文献中已经出版的材料进行匹配来认可结果。在这方面实现了古老的和谐。

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