Thermal Performance Analysis And Characterization For Mobile Radio
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Date
2013-11
Authors
Chee, Jiunn Shyong
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
Steady natural convection flow field and its heat transfer of a mobile radio are very complex
and three dimensional. Accurate and reliable numerical solution for low speed (at the
magnitude of 1 x 10-1 m/s), transitional flow induced by the interaction between buoyancy
force and gravity is yet a challenge on many commercially available computational fluid
dynamic (CFD) codes, as these CFD codes mainly developed for solving forced convection
heat transfer analysis. In this study, the appropriate boundary conditions, turbulence
model, external volume and meshing methods that contribute to a reliable CFD heat
transfer prediction of a mobile radio were identified by utilizing CFDesign, a commercial
finite element method CFD tool.
Prior to carry out a thermal simulation of natural convection on a mobile radio, efforts to
validate the prediction accuracy of CFDesign for different turbulence models, which are
zero-equation mixing-length, two-equation κ-ε and Low-Reynolds κ-ε were carried using a
simple rectangular square enclosure with heat source located centrally on the bottom
surface. Isotherm results obtained are correlated with results published by Calcagni, Marsili
et al. (2005), predicted by means of Fluent, a finite volume method code, and also results
from Aydin and Yang (2000) by utilizing finite difference method code. The purpose of this
prediction accuracy validation is to identify the most suitable turbulence model that deliver
realistic temperature distribution and flow field of natural convection heat transfer CFD
simulation in CFDesign.
Description
Keywords
Thermal Performance , Mobile Radio