Effect of Trenched Hemispherical Pin Fins on Cooling Performance of Heat Sink

被引：2

作者：

Yousfi, Aissa ^{[1
]}

Bellahcene, Lahcene ^{[2
]}

Alqurashi, Faris ^{[3
]}

Sahel, Djamel ^{[4
]}

Teggar, Mohamed ^{[2
]}

Laouer, Abdelghani ^{[5
]}

Arici, Muslum ^{[6
]}

Kchaou, Mohamed ^{[3
]}

机构：

[1] Univ Amar Telidji, LEDMSD, Laghouat 03000, Algeria

[2] Univ Amar Telidji, LMe, Laghouat 03000, Algeria

[3] Univ Bisha, Coll Engn, Dept Mech Engn, POB 001, Bisha, Saudi Arabia

[4] UST Oran MB, LCGE Lab, Oran 31000, Algeria

[5] Univ Jijel, Fac Exact Sci & Comp Sci, LPMCN Lab, Jijel 18000, Algeria

[6] Kocaeli Univ, Engn Fac, Mech Engn Dept, Kocaeli, Turkiye

来源：

ADVANCES IN SCIENCE AND TECHNOLOGY-RESEARCH JOURNAL | 2024年 / 18卷 / 03期

关键词：

cooling; heat sink; trench; hemispherical; pin fin; performance analysis; TRANSFER ENHANCEMENT; THERMAL PERFORMANCE; ARRAY; ELECTRONICS;

D O I：

10.12913/22998624/185505

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pin fins have the potential to improve the thermal performance of various engineering devices. Modified pin fins could further increase their thermal performance in a passive way at lower cost. This study is aimed at numerically investigating the thermal performance of trenched hemispherical pin fins heat sink (THPFHS) and the influence of parameters including the trench number (N = 1, 3 and 5) and thickness (e = 1 to 5 mm). The simulations were performed using a computational fluid dynamics (CFD) software considering turbulent air flow conditions. Results showed that the use of aluminum fins fitted with one trench in the middle of the hemispherical pin fin considerably increased the local heat transfer. Furthermore, all studied configurations show high thermal performance factor (HTPF) compared with the conventional cylindrical pin fins heat sink (CPFHS). For this new configuration (THPFHS), Nu increases by 45% while the thermal resistance reduces by 42%, compared to the baseline case. On the other hand, this improved performance results in 50% pressure drop penalty. Moreover, the obtained results showed a significant improvement in the performance mainly at high Re.

引用

页码：33 / 44

页数：12

共 32 条

[1] A comparative experimental thermal performance analysis of conical pin fin heat sink with staggered and modified staggered layout under forced convection [J].