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RISS 인기검색어
- 검색키워드
- 저자 : Pabitra Kumar Mandal (검색결과 1 건)
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Pabitra Kumar Mandal,Sayantan Sengupta,Subhas Chandra Rana,Dipankar Bhanja 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.11
The present problem is devoted to establish the effect of orientation on thermohydraulic performance of a horizontal heat sink with vertical pin-fin-array under forced convective environment. The fins are embedded on the base-plate of the heat sink in inline and staggered manner. When air passes over the fin-arrays it convects the heat conducted from the solid base-plate to the fins’ surface. Both the experimental and numerical studies have been performed under the same geometric configurations of the test plate and an acceptable agreement in results is obtained. To examine the influence of the orientation angle ( β ) on system performance, the heat sink is rotated anticlockwise in a regular interval from 0° to 360° about a vertical axis passing through the centre of the sink. The study has been performed over a large number of incoming Reynolds numbers (Re = 8500 to 38500) to investigate the possibility to achieve an optimal angle of orientation when Nusselt number (Nu) is maximum. Test results show that thermal dissipation attains maximum value at β = 40° for the inline array and that for β = 120° in case of staggered array. For low Reynolds number values (Re = 8500), the system performance is found better at an angle 35° and 120° for inline and staggered arrangement respectively. However, with Re = 38500, the maximum system performance is achieved at an angle 10° and 240° for inline and staggered arrangement respectively.
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