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Nanomechanical Concepts in Magnetically Guided Systems to Investigate the Magnetic Dipole Effect on Ferromagnetic Flow Past a Vertical Cone Surface
Coatings ( IF 3.4 ) Pub Date : 2021-09-16 , DOI: 10.3390/coatings11091129
Auwalu Hamisu Usman , Zahir Shah , Poom Kumam , Waris Khan , Usa Wannasingha Humphries

Because of the floating magnetic nanomaterial, ferrofluids have magneto-viscous properties, enabling controllable temperature changes as well as nano-structured fluid characteristics. The study’s purpose is to evolve and solve a theoretical model of bioconvection nanofluid flow with a magnetic dipole effect in the presence of Curie temperature and using the Forchheimer-extended Darcy law subjected to a vertical cone surface. The model also includes the nonlinear thermal radiation, heat suction/injection, viscous dissipation, and chemical reaction effects. The developed model problem is transformed into nonlinear ordinary differentials, which have been solved using the homotopy analysis technique. In this problem, the behavior of function profiles are graphically depicted and explained for a variety of key parameters. For a given set of parameters, tables representthe expected numerical values and behaviors of physical quantities. The nanofluid velocity decreases as the ferrohydrodynamic, local inertia, and porosity parameters increase and decrease when the bioconvection Rayleigh number increases. Many key parameters improved the thermal boundary layer and temperature. The concentration is low when the chemical reaction parameter and Schmidt number rises. Furthermore, as the bioconvection constant, Peclet and Lewis numbers rise, so does the density of motile microorganisms.

中文翻译:

磁导系统中的纳米力学概念研究磁偶极子对通过垂直锥面的铁磁流的影响

由于悬浮的磁性纳米材料,铁磁流体具有磁粘性,使得可控的温度变化以及纳米结构的流体特性成为可能。该研究的目的是发展和求解在居里温度存在下具有磁偶极效应的生物对流纳米流体流动的理论模型,并使用 Forchheimer 扩展达西定律受垂直锥面影响。该模型还包括非线性热辐射、吸热/热注入、粘性耗散和化学反应效应。将开发的模型问题转化为非线性常微分,这些问题已使用同伦分析技术解决。在这个问题中,函数配置文件的行为以图形方式描述并解释了各种关键参数。对于给定的一组参数,表格表示物理量的预期数值和行为。当生物对流瑞利数增加时,纳米流体速度随着铁水力学、局部惯性和孔隙率参数的增加和减少而降低。许多关键参数改善了热边界层和温度。当化学反应参数和施密特数上升时,浓度较低。此外,随着生物对流常数、Peclet 和 Lewis 数的增加,活动微生物的密度也会增加。许多关键参数改善了热边界层和温度。当化学反应参数和施密特数上升时,浓度较低。此外,随着生物对流常数、Peclet 和 Lewis 数的增加,活动微生物的密度也会增加。许多关键参数改善了热边界层和温度。当化学反应参数和施密特数上升时,浓度较低。此外,随着生物对流常数、Peclet 和 Lewis 数的增加,活动微生物的密度也会增加。
更新日期:2021-09-16
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