The tangential micro-heat sink with multiple fluid inlets |
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Authors: | Dorin Lelea |
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Affiliation: | University Politehnica Timisoara, Faculty of Mechanical Engineering, Department of Thermal Machines and Transportation, B-dul Mihai Viteazu nr. 1, 300222 Timisoara, Romania |
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Abstract: | The paper presents the thermal and hydrodynamic analysis of the micro-heat sink with straight microtubes and multiple inlet jets. The inlet cross-sections have the rectangular shape and positioned tangentially to the tube axis. Four different configurations are considered: three of them with three inlet jets and one with five inlet jets. The fluid flow regime is laminar and water with variable fluid properties is used as a working fluid. The heat flux spread through the bottom surface of the heat sink is q = 100 W/cm2. Thermal and hydrodynamic results of the micro-heat sink with multiple inlets are compared with results obtained for single tangential inlet configuration. For all cases, the analysis is made on a fixed pumping power basis. The strong dependence of the position and number of the inlet jets on thermal and hydrodynamic characteristics of the micro-heat sink is observed. |
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Keywords: | Tangential impingement heat sink Multiple inlets Thermal performances Flow separation Pumping power |
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