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


DOI: 10.1615/ICHMT.2009.CONV.330
21 pages

Y. Benakcha
Physics Faculty, USTHB. Po .Box 32, El Alia, Bab Ezzouar, Algiers, Algeria

R. Hadj-Ali
Physics Faculty, USTHB. Po .Box 32, El Alia, Bab Ezzouar, Algiers, Algeria

Ghezal Abderrahmane
Department of physics, University of Sciences and Technology Houari Boumediene , Algiers, Algeria

J. C. Loraud
University Institute of Industrial Thermal Systems, UMR CNRS 139 5 rue E. Fermi, Technopôle de Château Gombert,13453 Marseille cedex 13, FRANCE


This paper describes an analytically and numerically study of heat transfer mechanism in laminar pulsatile flow at low Reynolds number inside annular space and a heated cylinder. The equations are solved by a Crank-Nicholson finite difference method. Computations are carried out for a kinetic Reynolds number range of 0 ≤ Rew ≤ 1000, while the pulsation amplitude is fixed at a value Aw = 0.75 and the Prandtl number (Pr = 0.7). We are interested more particularly in the evolution of the temperature and Nusselt number. The results show that indicate clearly how pulsation affects the rate of heat transfer and how the phenomenon depends on the kinetic Reynolds Number Rew .
The effects of a kinetic Reynolds numbers on heat transfer are investigated. The results showed that the temperature gradient is significant at the inlet of annular space. The relative mean Nusselt Number (Nups)m is varied with frequency about two modes. For the low frequencies the heat transfer is significant along a heated wall, but for the high frequencies the heat transfer does not change practically with the pulsations. These results are in good agreement with those obtained experimentally and numerically by other researchers.

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