Title
Effect of Magnetic Field on Entropy Generation in a Microchannel Heat Sink with Offset Fan Shaped.
Abstract
In this study, convection flow in microchannel heat sink with offset fan-shaped reentrant cavities in sidewall filled with Fe3O4-water is numerically investigated. The effects of changing some parameters such as Reynolds number and magnetic field are considered. The nanofluid flow is laminar, steady and incompressible, while the thermo-physical properties of nanoparticles were assumed constant. A finite volume method and two phase mixture models were used to simulate the flow. The obtained results show that the frictional entropy generation increases as Reynolds number increases, while a reverse trend is observed for thermal entropy generation. By applying a non-uniform magnetic field, the entropy generation due to heat transfer decreases at first and then increases. When using the uniform magnetic field, the frictional entropy generation and thermal entropy generation is negligible. For all studied cases, the total entropy generation decreases using non-uniform magnetic fields. The results indicate that by increasing the magnetic field power, the total entropy generation decreases.
Year
DOI
Venue
2016
10.3390/e18010010
ENTROPY
Keywords
Field
DocType
nanofluid,microchannel heat sink,magnetic field,entropy generation
Mathematical optimization,Magnetic field,Convection,Thermodynamics,Reynolds number,Thermal,Laminar flow,Heat transfer,Mechanics,Finite volume method,Mathematics,Nanofluid
Journal
Volume
Issue
ISSN
18
1
1099-4300
Citations 
PageRank 
References 
1
0.41
5
Authors
3
Name
Order
Citations
PageRank
Mohammad Nasiri110.41
M.M. Rashidi214022.72
Giulio Lorenzini321.86