Impact on Heat Transfer Rate Due to an Extended Surface on the Passage of Microchannel Using Cylindrical Ribs with Varying Sector Angle

Ayush Prada Dash, Tabish Alam, Md Irfanul Haque Siddiqui, Paolo Blecich (), Mukesh Kumar, Naveen Kumar Gupta, Masood Ashraf Ali and Anil Singh Yadav
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Ayush Prada Dash: Department of Mechanical Engineering, Indian Institute of Engineering Science and Technology, Shibpur 711103, India
Tabish Alam: CSIR-Central Building Research Institute, Roorkee 247667, India
Md Irfanul Haque Siddiqui: Mechanical Engineering Department, King Saud University, Riyadh 11421, Saudi Arabia
Paolo Blecich: Faculty of Engineering, University of Rijeka, 51000 Rijeka, Croatia
Mukesh Kumar: Department of Mechanical Engineering, Indian Institute of Engineering Science and Technology, Shibpur 711103, India
Naveen Kumar Gupta: Institute of Engineering and Technology, GLA University, Mathura 281406, India
Masood Ashraf Ali: Department of Industrial Engineering, College of Engineering, Prince Sattam Bin Abdulaziz University, Al-Kharj 16273, Saudi Arabia
Anil Singh Yadav: Department of Mechanical Engineering, IES College of Technology, Bhopal 462044, India

Energies, 2022, vol. 15, issue 21, 1-21

Abstract: In this paper, the impact of an extended surface on the passage of a microchannel using cylindrical ribs with variable sector angles on heat transfer rate is presented using computer simulation. Extended surfaces in the form of cylindrical ribs of varying sector angles in the passage of microchannel in a staggered manner have been designed. The sidewalls of a new kind of microchannel incorporating five distinct ribs with sector angles ranging from 45° to 80° have been analyzed. Ansys Fluent workbench software has been exploited to simulate this novel design of a microchannel heat sink. A three-dimensional heat transfer and fluid flow model of the microchannel heat sink (MCHS) was developed, and the fluid and solid regions were discretized in very fine meshes. All CFD simulations were performed for Reynolds numbers between 100 and 900. Nusselt numbers are varied in the following ranges: 6.93 to 13.87, 6.93 to 14.38, 6.93 to 17.80, 7.15 to 27.86, and 7.20 to 37.38 at sector angles of 45°, 50°, 60°, 70°, and 80°, respectively. It is concluded that the Nusselt number is strongly influenced by the Reynolds number. At an angle of 80°, the maximum friction factor and pumping power requirements were observed. Additionally, a 45° angle has been proven to be the minimal friction factor and pumping power requirement. It is revealed that the THPP has all values larger higher than 1. At angles of 80° and 45°, the maximum and minimum values of THPP have been discovered, respectively. In addition, thermo-hydraulic performance parameters have been evaluated, which are greater than one for all sector angles.

Keywords: microchannel; Nusselt number; CFD; electronics cooling; heat transfer enhancement; cylindrical ribs (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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