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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

AEJ - Alexandria Engineering Journal

ISSN

1110-0168

e-ISSN

2090-2670

Svazek periodika

65

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

22

Strana od-do

709-730

Kód UT WoS článku

000920750200001

EID výsledku v databázi Scopus

2-s2.0-85140981158