Record number :
100114
Title of article :
Flow and pressure field characteristics in the porous block compact modeling of parallel plate heat sinks
Author/Authors :
R.، Nair, نويسنده , , A.، Bar-Cohen, نويسنده , , S.، Narasimhan, نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
-146
From page :
147
To page :
0
Abstract :
Growing complexity has resulted in an increased computational effort in CFD modeling of electronic systems. To reduce the computational effort, one or several heat sinks can be represented by a compact "porous block" model, with an effective thermal conductivity and pressure loss coefficient. In this study of parallel plate heat sinks in laminar forced convection, a methodology is developed to analytically determine the fluid properties of compact heat sink models that provide acceptable levels of approximation. The results of an extensive set of CFD simulations for a three heat sink channel, covering three distinct heat sink geometries, air velocities from 0.25 m/s to 2 m/s and various spacings between the heat sinks, were used to create and evaluate the effectiveness of compact models. Use of a two term, equivalent loss coefficient-reflecting the linear and quadratic components in the pressure drop of a porous block-has led to good agreement between the detailed numerical and compact model predictions, with compact heat sink pressure drops usually slightly higher (<10%) than detailed heat sink pressure drops.
Keywords :
Analytical and numerical techniques , natural convection , heat transfer
Journal title :
IEEE TRANSACTIONS ON COMPONENTS AND PACKAGING TECHNOLOGIES
Journal title :
IEEE TRANSACTIONS ON COMPONENTS AND PACKAGING TECHNOLOGIES
Serial Year :
2003
Link To Document :
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