期刊
CASE STUDIES IN THERMAL ENGINEERING
卷 31, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.csite.2022.101806
关键词
Hydrofoil pin-fin heat sink; Entropy generation; Hydrothermal performance; Multiwalled carbon nanotubes; Graphene nanoplatelets
资金
- National Research Foundation of Korea - Korean government (MSIP) [2020R1A2B5B02002512, 2020R1A4A1018652]
- National Research Foundation of Korea [2020R1A4A1018652, 2020R1A2B5B02002512] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This study investigates the entropy generation and hydrothermal characteristics of different pin-fin configurations using water-based MWCNT and MWCNT/GNP nanofluids in a heat sink. Results show that the triangular pin-fin heat sink performs the best, followed by the rhombus and hydrofoil pin-fin heat sinks.
Identifying optimal pin-fin configurations is essential to analyze the full potential of utilizing nanofluids in pin-fin heat sinks for electronics cooling applications. Therefore, the present study aimed to investigate the entropy generation and hydrothermal characteristics of water-based MWCNT (Multiwalled carbon nanotubes) and MWCNT/GNP (Multiwalled carbon nanotubes/graphene nanoplatelets) nanofluids in a heat sink equipped with fins of different configurations. The forced convection of the nanofluid was simulated through the multiphase Eulerian-Lagrangian model (discrete-phase model) by including the influence of slip mechanisms (Brownian motion, thermophoresis, Saffman lift and drag forces, pressure forces, virtual mass, and gravity) and the interphase nanolayering effect. Results showed that the performance of the MWCNT and MWCNT/GNP nanofluids was the highest in the triangular pin-fin heat sink, followed by rhombus and hydrofoil pin-fin heat sinks. The streamlined shape along with the large lateral and small stream-wise interspacing between the hydrofoil and rhombus fins hindered the effective coolant distribution across the heat sinks, thereby deteriorating their heat-dissipation capacity. However, the performance evaluation criteria results of the rhombus pin-fin heat sink outperformed the other pin-fin configurations due to the lower pressure drop.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据