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Abstract
The micro-pin-fin heat sink (MPFHS) is widely employed for the heat transfer enhancement of microchannel heat sinks. In the current paper, the effect of flow normalization on the thermohydraulic performance of micro-pin-finned heat sinks is studied numerically. Two geometries of MPFHSs, the conventional design micro-pin-fin heat sink (CD-MPFHS) with a uniform-width micro pin fin and the proposed design micro-pin-fin heat sink (PD-MPFHS) with a nonuniform-width micro pin fin, are studied. Flow distribution analysis in the primary and secondary channels of MPFHSs is carried out. More flow resistance offered by wider central micro pin fins diverts more flow toward side channels; as a result of which, better flow distribution in primary channels and higher flow across secondary channels are noticed for the PD-MPFHS as compared to the CD-MPFHS. As a result of that, maximum and average base temperatures are reduced by 4.6 and 2.2K as compared to the CD-MPFHS. The Nusselt number increased by 10.1%, and a better thermohydraulic performance index has been offered by the PD-MPFHS for the entire studied Reynolds number range.
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Authors (3)
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Gurjeet Singh Mr
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Kumar Ritunesh Dr
Cite as
Full text
- Publication version
- Accepted or Published Version
- License
- Copyright (2020 the American Institute of Aeronautics and Astronautics, Inc)
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER
no. 35,
pages 28 - 37,
ISSN: 0887-8722 - Language:
- English
- Publication year:
- 2020
- Bibliographic description:
- Singh G., Ritunesh K., Mikielewicz D.: Effect of Flow Normalization in Micro-Pin-Finned Heat Sink: Numerical Study// JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER -Vol. 35,iss. 1 (2020), s.28-37
- DOI:
- Digital Object Identifier (open in new tab) 10.2514/1.t6011
- Sources of funding:
-
- Statutory activity/subsidy
- Verified by:
- Gdańsk University of Technology
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