Publication de 18 numéros par an
ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561
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0.6
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ENTROPY GENERATION DUE TO NATURAL CONVECTION COOLING OF A HORIZONTAL HEAT SOURCE MOUNTED INSIDE A SQUARE CAVITY FILLED WITH NANOFLUID
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RÉSUMÉ
The objective of this paper is to investigate the natural convection cooling of a heat source mounted inside a square cavity with special attention being paid to entropy generation. The cavity is filled with copper−water nanofluid; the right vertical wall is kept at a constant temperature, while other walls are adiabatic ones. The numerical scheme is based on the finite volume method with the SIMPLE algorithm for pressure−velocity coupling.
In this study, the influence of some effective parameters such as the Rayleigh number, location of the heat source, and solid concentration are studied; then, entropy generation due to the heat transfer irreversibility and fluid friction irreversibility as a function of Ra and solid concentration and heat source location is studied. The result shows that location of the heat source is an important parameter affecting the flow pattern and temperature field and variation of the entropy generation. Consequently the optimum case is selected since the thermal system could have the least entropy generation and the best heat transfer rate.
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Mahian Omid, Kianifar Ali, Kleinstreuer Clement, Al-Nimr Moh’d A., Pop Ioan, Sahin Ahmet Z., Wongwises Somchai, A review of entropy generation in nanofluid flow, International Journal of Heat and Mass Transfer, 65, 2013. Crossref
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Mohammadtabar Mohammad, Mohammadtabar Farshad, Shokri Rouholluh, Sadrzadeh Mohtada, Numerical Investigation of the Entropy Generation Due to Natural Convection in a Partially Heated Square Cavity Filled With Nanofluids, Heat Transfer Engineering, 38, 17, 2017. Crossref
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Xie Yonghui, Zheng Lu, Zhang Di, Xie Gongnan, Entropy Generation and Heat Transfer Performances of Al2O3-Water Nanofluid Transitional Flow in Rectangular Channels with Dimples and Protrusions, Entropy, 18, 4, 2016. Crossref
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Hajatzadeh Pordanjani Ahmad, Aghakhani Saeed, Alnaqi Abdulwahab A., Afrand Masoud, Effect of alumina nano-powder on the convection and the entropy generation of water inside an inclined square cavity subjected to a magnetic field: Uniform and non-uniform temperature boundary conditions, International Journal of Mechanical Sciences, 152, 2019. Crossref
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Alnaqi Abdulwahab A., Aghakhani Saeed, Pordanjani Ahmad Hajatzadeh, Bakhtiari Reza, Asadi Amin, Tran Minh-Duc, Effects of magnetic field on the convective heat transfer rate and entropy generation of a nanofluid in an inclined square cavity equipped with a conductor fin: Considering the radiation effect, International Journal of Heat and Mass Transfer, 133, 2019. Crossref
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Tian Zhe, Shahsavar Amin, Al-Rashed Abdullah A.A.A., Rostami Sara, Numerical simulation of nanofluid convective heat transfer in an oblique cavity with conductive edges equipped with a constant temperature heat source: Entropy production analysis, Computers & Mathematics with Applications, 81, 2021. Crossref
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Hajatzadeh Pordanjani Ahmad, Aghakhani Saeed, Karimipour Arash, Afrand Masoud, Goodarzi Marjan, Investigation of free convection heat transfer and entropy generation of nanofluid flow inside a cavity affected by magnetic field and thermal radiation, Journal of Thermal Analysis and Calorimetry, 137, 3, 2019. Crossref
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Chen Xi, Zhao Tian, Zhang Meng-Qi, Chen Qun, Entropy and entransy in convective heat transfer optimization: A review and perspective, International Journal of Heat and Mass Transfer, 137, 2019. Crossref
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Al-Rashed Abdullah A.A.A., Investigating the effect of alumina nanoparticles on heat transfer and entropy generation inside a square enclosure equipped with two inclined blades under magnetic field, International Journal of Mechanical Sciences, 152, 2019. Crossref
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Li Zhixiong, Hussein Ahmed Kadhim, Younis Obai, Afrand Masoud, Feng Shizhe, Natural convection and entropy generation of a nanofluid around a circular baffle inside an inclined square cavity under thermal radiation and magnetic field effects, International Communications in Heat and Mass Transfer, 116, 2020. Crossref
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Shen Zhongliang, Zheng Zijun, Zhu Lijun, Gao Yunxiao, Wu Mingge, Optimization of blade geometry by neural network in natural convection and entropy generation of nanofluids within an oblique square cavity with the effects of volumetric radiation with LB method, Journal of Thermal Analysis and Calorimetry, 147, 19, 2022. Crossref