Library Subscription: Guest
ICHMT DL Home Current Year Archives Executive Committee International Centre for Heat and Mass Transfer

NUMERICAL PREDICTION FOR TURBULENT FLOW IN POROUS MEDIA MODIFIED κ-ε MODEL

DOI: 10.1615/ICHMT.2008.CHT.1250
13 pages

Nadia Allouache
Faculté de Génie Mécanique et de Génie des Procédés Université des Sciences et de la Technologie Houari Boumedienne, B. P. 32 EL Alia, Bab Ezzouar 16111, Algeria

Salah Chikh
USTHB, Faculty of Mechanical and Process Engineering, LTPMP, Alger 16111, Algeria

Abstract

This present work describes a modified κ-ε model for turbulent flow in porous media. The governing equations are obtained by time averaging the volume-averaged equations (time-averaging theory).This modified model accounts for the second order approximation in the Forchheimer terms. This higher order term leads to a better description of the turbulent effects of the Forchheimer term in the flow through the porous media. As an application example, a turbulent flow in an annular heat exchanger with a porous substrate attached to the inner cylinder is analysed. A control volume approach is employed for discretizing the governing equations. The set of the discretized linear algebraic equations are solved using the line by line method. A good agreement is obtained for the validation case. The effect of the flow rate ratio between the cold and hot fluids is analyzed.

ICHMT Digital Library

Bow shocks on a jet-like solid body shape. Thermal Sciences 2004, 2004. Pulsed, supersonic fuel jets - their characteristics and potential for improved diesel engine injection. PULSED, SUPERSONIC FUEL JETS - THEIR CHARACTERISTICS AND POTENTIAL FOR IMPROVED DIESEL ENGINE INJECTION
View of engine compartment components (left). Plots of temperature distributions in centreplane, forward of engine (right). CHT-04 - Advances in Computational Heat Transfer III, 2004. Devel... DEVELOPMENT AND CURRENT STATUS OF INDUSTRIAL THERMOFLUIDS CFD ANALYSIS
Pratt & Whitney's F-135 Joint Strike Fighter Engine under test in Florida is a 3600F class jet engine. TURBINE-09, 2009. Turbine airfoil leading edge stagnation aerodynamics and heat transfe... TURBINE AIRFOIL LEADING EDGE STAGNATION AERODYNAMICS AND HEAT TRANSFER - A REVIEW
Refractive index reconstructed field. (a) Second iteration. (b) Fourth iteration. Radiative Transfer - VI, 2010. Theoretical development for refractive index reconstruction from a radiative ... THEORETICAL DEVELOPMENT FOR REFRACTIVE INDEX RECONSTRUCTION FROM A RADIATIVE TRANSFER EQUATION-BASED ALGORITHM
Two inclusion test, four collimated sources. Radiative Transfer - VI, 2010. New developments in frequency domain optical tomography. Part II. Application with a L-BFGS associated to an inexa... NEW DEVELOPMENTS IN FREQUENCY DOMAIN OPTICAL TOMOGRAPHY. PART II. APPLICATION WITH A L-BFGS ASSOCIATED TO AN INEXACT LINE SEARCH