期刊
ENERGIES
卷 15, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/en15031206
关键词
entropy generation; magnetic field; porous medium; viscous dissipation; mixed convection
资金
- Shanghai Major Science Popularization Project [20DZ2306500]
- Special Project for Capacity Improvement of Shanghai Professional Technical Service Platform [19DZ2290400]
This paper investigates the entropy generation in a micropolar fluid over a stretching surface. The study analyzes the influence of various physical parameters on velocity, microrotation, and temperature profiles. It also examines the impact of thermal radiation, porous medium, magnetic field, and viscous dissipation. The findings are valuable for the petroleum industry and engineering designs.
Various industrial operations involve frequent heating and cooling of electrical systems. In such circumstances, the development of relevant thermal devices is of extreme importance. During the development of thermal devices, the second law of thermodynamics plays an important role by means of entropy generation. Entropy generation should be reduced significantly for the efficient performance of the devices. The current paper reports an analytical study on micropolar fluid with entropy generation over a stretching surface. The influence of various physical parameters on velocity profile, microrotation profile, and temperature profile is investigated graphically. The impact of thermal radiation, porous medium, magnetic field, and viscous dissipation are also analyzed. Moreover, entropy generation and Bejan number are also illustrated graphically. Furthermore, the governing equations are solved by using HAM and code in MATHEMATICA software. It is concluded from this study that velocity and micro-rotation profile are reduced for higher values of magnetic and vortex viscosity parameter, respectively. For larger values of Eckert number and thermal radiation parameters, Bejan number and entropy generation are increased, respectively. These findings are useful in petroleum industries and engineering designs.
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