Flow and Heat Transfer during an Expansion Stroke in a Composite Fluid/Porous System
Author/Authors :
Nessrine، Z. نويسنده , , Ayda، B. نويسنده , , Hcen، D. نويسنده , , Sassi، B.N. نويسنده ,
Issue Information :
ماهنامه با شماره پیاپی 6 سال 2010
Pages :
9
From page :
87
To page :
95
Abstract :
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The purpose of this study is to analyze the fluid flow and heat transfer in a pipe partially filled with porous media and
provided with a flat piston during an expansion stroke. In addition to the Navier-Stokes equation for the fluid region,
Brinkman-Forchheimer-Lapwood-extended Darcy’s model is introduced into the numerical solver to simulate flow
and heat transfer in the porous insert. The heat transfer in porous media is studied by using the assumption of local
thermal equilibrium. The discretization procedure is based on Control-Volume-based Finite Element Method. The
coupled pressure-velocity equations are solved using the SIMPLER algorithm. This investigation concerns the
hydrodynamic characteristics, using the Reynolds numbers and the porosity effects, and the heat transfer
characteristics using the heat capacity and the thermal conductivity ratios effects.
