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Numerical analysis of various shapes of lozenge pin-fins in microchannel heat sink

  • Injamamul Haque ORCID logo , Tabish Alam EMAIL logo , Jagmohan Yadav , Naveen Kumar Gupta , Md Irfanul Haque Siddiqui , Tauseef Uddin Siddiqui , Naushad Ali , Shivam Srivastava , Anil Singh Yadav , Abhishek Sharma , Rohit Khargotra and Amit Kumar Thakur ORCID logo
Published/Copyright: September 11, 2023
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International Journal of Chemical Reactor Engineering
From the journal International Journal of Chemical Reactor Engineering Volume 22 Issue 1

Abstract

Higher density heat flux is the major cause of damage to the electronic component; therefore, cooling such components are of the utmost importance to operate in a safe zone and to increase their life. For this purpose, Microchannel heat sinks (MHSs) are among the most practical methods for dissipating unwanted heat. In this regard, the novel lozenge-shaped pin-fins in the flow passage of the microchannel heat sink (MHS) have been designed and proposed to achieve higher cooling performance. Aspect ratios (λ = 0.30, 0.39, 0.52, 0.69, 1.00) of several lozenge-shaped pin-fins have been used into the design of MHS to investigate their impact on heat transmission and fluid flow characteristics. A three-dimensional model of MHS with a lozenge-shaped has been generated and simulated numerically in the following range of Reynolds numbers, starting from 100 to 900. Heat transmission and flow characteristics have been presented and discussed in detail. It has been found that introducing lozenge-shaped pin-fins in MHS has greatly improved cooling performance. The highest improvement in Nusselt number has been observed when aspect ratio (λ) of lozenge-shaped pin-fins was 1.00. The Nusselt number have been varied in the following ranges of 6.96–12.34, 6.97–12.72, 7.01–13.62, 7.09–14.43, and 7.12–15.26 at λ = 0.30, λ = 0.39, λ = 0.52, λ = 0.69, and λ = 1.0, respectively. In addition, a study of the thermohydraulic performance of the proposed lozenge-shaped pin-fins in the MHS found that this design is an effective means of lowering operating temperature.

Keywords: pin-fins; lozenge shape; heat transfer; thermohydraulic; microchannel heat sink
Corresponding author: Tabish Alam, Architecture, Planning and Energy efficiency, CSIR-Central Building Research Institute, Roorkee 247667, India, E-mail:

Acknowledgments

The authors extend their appreciation to the Researchers Supporting Project number (RSPD2023R999), King Saud University, Riyadh, Saudi Arabia.

  1. Research ethics: Not applicable.

  2. Author contributions: Not applicable.

  3. Competing interests: No competing interests.

  4. Research funding: Research funding is provided by King Saud University, Riyadh, Saudi Arabia.

  5. Data availability: Data available on request.

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Received: 2023-05-16
Accepted: 2023-08-27
Published Online: 2023-09-11

© 2023 Walter de Gruyter GmbH, Berlin/Boston

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https://doi.org/10.1515/ijcre-2023-0092
Keywords for this article
pin-fins; lozenge shape; heat transfer; thermohydraulic; microchannel heat sink

Articles in the same Issue

  1. Frontmatter
  2. Special Issue Articles
  3. An experimental evaluation of green surfactants to stabilize silica nanofluids in saline conditions and its application in CO2 absorption
  4. Indoor air quality control using lab scale air purifier tower
  5. Green ultrasound-assisted extraction and life cycle assessment of lutein from marigold flowers using biocompatible surfactants
  6. Numerical analysis of various shapes of lozenge pin-fins in microchannel heat sink
  7. Extraction of biodiesel from pomelo peel and investigation of its efficiency as a lubricant in water-based drilling fluid
  8. Methyl-orange/reduced graphene oxide composite as the electrode material for the solid-state supercapacitor
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  11. Experimental studies on renewable hydrogen production by steam reforming of glycerol over zirconia promoted on Ni/Al2O3 catalyst
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