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


DOI: 10.1615/ICHMT.2008.CHT.1220
page 15

Youssef Stiriba
University Rovira i Virgili

Francesc Xavier Grau
Department of Mechanical Engineering, University Rovira i Virgili, Av. Paisos Catalans 26, 43007 Tarragona, Catalonia, Spain

Josep Ferrè
University Rovira i Virgili, Av. Paisos Catalans 26, Tarragona, Spain 43007

Anton Vernet
Department of Mechanical Engineering, University Rovira i Virgili, Av. Paisos Catalans 26, Tarragona, Spain 43007


The three-dimensional mixed convection past a cubical open cavity that lies at the bottom of a horizontal channel is studied numerically. The Reynolds numbers (Re) based on the height of the cavity and the free-stream velocity are 100 and 1000, and the Richardson numbers (Ri) are between 0.001 and 10. The cavity is assumed to be cubic in geometry and the vertical walls in the inflow and outflow sides are isothermals. A direct numerical simulation is undertaken to analyse the flow structure, the heat transfer characteristics and the complex interaction between the induced stream flow and the buoyancy-induced flow. It is found that the flow exhibits a three-dimensional structure and becomes steady for Re = 100 and Re = 1000 with low Ri number. The forced flow dominates the flow transport mechanism and large recirculating zone forms inside the enclosure. For both high Reynolds and Grashof numbers the natural convection effects come into play and push the recirculating zone further upstream. The flow may become unstable and the Nusselt number increases significantly.

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