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Heat transfer characteristics of plate fin heat sink with longitudinal vortex generators

Heat transfer characteristics of plate fin heat sink with longitudinal vortex generators

Santhanakrishnan, Mani Sekaran, Tilford, Timothy ORCID: 0000-0001-8307-6403 and Bailey, Christopher ORCID: 0000-0002-9438-3879 (2022) Heat transfer characteristics of plate fin heat sink with longitudinal vortex generators. International Journal of Numerical Methods for Heat and Fluid Flow. ISSN 0961-5539 (doi:https://doi.org/10.1108/HFF-06-2022-0386)

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Abstract

Purpose:
This article aims to provide an insight into the relationship between design parameters and thermal performance of plate-fin heat sinks incorporating longitudinal vortex generators inside a plate fin heat sink channel.
Design/Methodology/Approach:
A computational fluid dynamics model of a delta winglet pair vortex generator mounted inside a plate-fin heat sink geometry is detailed, and the model is validated by comparison with experimental data. The validated model is used to perform a virtual design of experiments study of the heatsink with bottom plate and vertical plate mounted vortex generators. Data from this study is used to regress a response surface enabling the influence of each of the assessed design variables on thermal performance and flow resistance to be determined.
Findings:
The results show that the thermal hydraulic performance of a plate fin heat sink with bottom plate mounted vortex generator and vertical plate fin mounted vortex generator are respectively 1.12 and 1.17 times higher than the baseline plate fin heat sink. Further the performance variation of the heat sink with vortex generator, relative to delta winglet’s arrangement (common flow up and common flow down), trailing edge gap length and Reynolds number were also evaluated and reported.
Originality/Value:
For the first time, performance characteristics of delta winglet vortex generators mounted inside the plate fin heat sink is evaluated against different design variables and a polynomial regression model is developed. The developed regression model and computed results can be used to design high performance plate fin heat sinks mounted with delta winglet vortex generators.

Item Type: Article
Uncontrolled Keywords: electronics reliability; optimisation; heat transfer; Vortex generator; plate fin heat sink; response surface model; computational fluid; dynamics; heat exchanger
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty / School / Research Centre / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Centre for Numerical Modelling & Process Analysis (CNMPA)
Faculty of Engineering & Science > Centre for Numerical Modelling & Process Analysis (CNMPA) > Computational Mechanics & Reliability Group (CMRG)
Faculty of Engineering & Science > School of Computing & Mathematical Sciences (CMS)
Last Modified: 01 Dec 2022 15:17
URI: http://gala.gre.ac.uk/id/eprint/37561

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