Abo Bibliothek: Guest
ICHMT DL Home Aktuelles Jahr Archive Vorstand International Centre for Heat and Mass Transfer

Experimental study of impinging turbulent round jet flow on a square cylinder laid on a flat plate

DOI: 10.1615/ICHMT.2006.TurbulHeatMassTransf.890
pages 441-444

N. S. Kim
Institut de Mécanique des Fluides de Toulouse, Université Paul Sabatier, Toulouse, France

Andre Giovannini
Institut de Mecanique des Fluides de Toulouse, UMR 5502, Universite Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex, France

G. Harran
Institut de Mécanique des Fluides de Toulouse, Allée du Pr. Camille Soula, 31400 Toulouse, France

Abstrakt

A turbulent axisymmetric air jet impinging on a square cylinder mounted on a flat plate was studied experimentally. Turbulence statistics, flow's topology and convection heat transfer characteristics when uniform heat flux was imposed in the test plate were investigated using infrared thermography, particle image velocimetry and by flow visualization using fluorescent dye. The jet from a long round pipe, 75 pipe diameters in length, at Reynolds number of 23 000, impinged vertically on the square cylinder (3D×3D×43D). The flow's topology demonstrated a three-dimensional recirculation and a presence of foci on the bottom wall near the corner. The influence of these flow's structures on heat transfer is examined. The origin of the secondary peak in heat transfer coefficient distribution on the top wall of the cylinder can be attributed to very pronounced shear production coupled with the external turbulence coming from the free jet.

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