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numerical simulation of flow and heat transfer characteristics of a liquid jet impinging on a cylindrical cavity heat sink
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نویسنده
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tang z. g. ,deng f. ,wang s. c. ,cheng j. p.
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منبع
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journal of applied fluid mechanics - 2021 - دوره : 14 - شماره : 3 - صفحه:723 -732
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چکیده
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In this study, the flow and heat transfer characteristics of a liquid jet impinging on cylindrical cavity heat sinks with a local body heat source were numerically investigated. the transition sst turbulence model was validated and adopted. the parameters of structure and flow, including d/d = 2, 3, and 4, h/d = 0.05, 0.10, 0.15, and 0.20, and re = 5,000, 10,000, and 23,000, were investigated. the results revealed that the adoption of a cylindrical cavity structure can improve the heat transfer capacity of the heat sink. a horseshoe vortex introduced by an inclined jet near the cavity edge region improved the heat transfer performance. the maximum enhancement of the cylindrical cavity heat sink was 11.8% compared with the flat plate heat sink when d/d = 3, h/d = 0.15, and re = 23,000.
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کلیدواژه
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liquid impingement ,cylindrical cavity heat sink ,horseshoe vortex ,numerical simulation
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آدرس
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hefei university of technology, school of mechanical engineering, china, hefei university of technology, school of mechanical engineering, china, hefei university of technology, school of mechanical engineering, china, hefei university of technology, school of mechanical engineering, china
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پست الکترونیکی
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chjianping@hfut.edu.cn
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Authors
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