Thermal-hydraulic modeling of heat sink under force convection: Investigating the effect of wings on new designs

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F23%3A00373579" target="_blank" >RIV/68407700:21220/23:00373579 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.aej.2022.10.045" target="_blank" >https://doi.org/10.1016/j.aej.2022.10.045</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.aej.2022.10.045" target="_blank" >10.1016/j.aej.2022.10.045</a>

Result language

angličtina

Original language name

Thermal-hydraulic modeling of heat sink under force convection: Investigating the effect of wings on new designs

Original language description

This study aims to investigate the heat transfer performance and fluid flow characteristics of different geometrical configurations of new heat sinks. The effect of wings and number of pins on the performance of the heat sinks were numerically investigated. Rigorous heat transfer models, including its associated physical parameters such as surface area were derived for each new design. The results show that adding wings to the pin fins significantly increases heat dissipation from the hot spots. However, there was 47 % heat transfer enhancement of Perforated Hollow Pin-Fin Heat Sink (PHPFHS) with wings when compared with (PHPFHS) without wings. At a velocity of 5 m/s, the corresponding pressure drop for Cone Pin-Fin Heat Sink (CPFHS) without Wings is 10 Pa and that of CPFHS with wings is about 23 Pa. The formation of vortex at the rear of the pin fins causes an increase in pressure drop. The CPFHS with wings has the maximum thermal performance index g which ranges from 1.6 to 2.4 The complex structure of the heat sinks with wings increases the flow resistance and suppresses the flow separation. A relative comparison of the results shows that vortex formation is minimal and suppressed for heat sinks without wings.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20303 - Thermodynamics

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

AEJ - Alexandria Engineering Journal

ISSN

1110-0168

e-ISSN

2090-2670

Volume of the periodical

65

Issue of the periodical within the volume

2

Country of publishing house

AT - AUSTRIA

Number of pages

22

Pages from-to

709-730

UT code for WoS article

000920750200001

EID of the result in the Scopus database

2-s2.0-85140981158