Effect of magnetic field excitation and sinusoidal curved cavity coupling on heat transfer enhancement and entropy generation of nanofluids

This study innovatively developed a sinusoidal cavity heat transfer model and applied it to the natural convection heat transfer effect under magnetic field excitation through experimental exploration. The effects of heat input, mass concentration of nanofluids, magnetic density, magnetic field layo...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2024-11, Vol.149 (22), p.13457-13470
Main Authors: Tian, Zhen, Yue, Linfei, Qi, Cong, Tang, Maoqing
Format: Article
Language:English
Subjects:
Analytical Chemistry
Chemistry
Chemistry and Materials Science
Electronic components
Entropy
Excitation
Field strength
Fluid flow
Free convection
Heat transfer
Inorganic Chemistry
Magnetic fields
Management systems
Measurement Science and Instrumentation
Nanofluids
Nusselt number
Physical Chemistry
Polymer Sciences
Sine waves
Thermal management
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Summary:This study innovatively developed a sinusoidal cavity heat transfer model and applied it to the natural convection heat transfer effect under magnetic field excitation through experimental exploration. The effects of heat input, mass concentration of nanofluids, magnetic density, magnetic field layout and other variables on heat transfer were studied. The consequence showed that for heat transfer, the horizontal magnetic field has a weakening effect, which can reduce the Nusselt number by 2.57% at most. The double lateral vertical staggered magnetic field has the best effect, and the Nusselt number can be increased by 5.37% at most. Under a vertical magnetic field, increasing the magnetic field strength will increase the corresponding entropy generation. The maximum increase is 9.11%. This will provide some guidance for design of cavity and the application of magnetic nanofluids in the field of thermal management of electronic components and also provides the possibility for designing more efficient thermal management systems in the future.
ISSN:1388-6150
1588-2926
DOI:10.1007/s10973-024-13596-5