Open AccessCFD Simulation and Analytical Validation of Rectangular and Square microchannel heat sink with liquid water as cooling medium
Author(s) -
Saurabh Narayan Pawar,
Nilesh Balkishanji Totla
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/998/1/012030
Subject(s) - microchannel , computational fluid dynamics , hydraulic diameter , pressure drop , heat sink , mechanics , materials science , reynolds number , heat flux , working fluid , rectangle , thermodynamics , heat transfer , physics , mathematics , geometry , turbulence
In present work, both analytical and CFD investigation was performed to check the microchannel heat sink cooling performance, made up of copper with two different microchannel cross sections with shape of rectangle and square. CFD analysis is conducted with water as working fluid for both of the cross sections and Reynolds number ranging from 600 to 1000. A copper microchannel heat sink with bottom size of 25.4mm×25.4mm and height of 2.384mm is selected and CFD analysis was carried out and at bottom constant heat flux boundary condition is assumed. For comparison between two cross sections, the hydraulic diameter used is same for both. Rectangular cross section microchannel showed better cooling performance as compared to square cross section microchannel. Both analytical and CFD simulation results of pressure drop in rectangular microchannel heat sink are in good agreement with a difference of 18.9%.