Доступ предоставлен для: Guest
Главная ICHMT DL Текущий год Архив Исполнительный Комитет ICHMT

Heat/Mass Transfer of Pulsatile Impinging Jets

DOI: 10.1615/ICHMT.2006.TurbulHeatMassTransf.880
pages 437-440

Zdenek Travnicek
Institute of Thermomechanics of the Czech Academy of Sciences

Tomas Vit
Institute of Thermomechanics AS CR, and Faculty of Mechanical Engineering, Technical University of Liberec, Czech Republic

T. Hyhlik
Faculty of Mechanical Engineering, Czech Technical University in Prague, Technická 4, 166 07 Prague 6, Czech Republic

Frantisek Marsik
Institute of Thermomechanics, Czech Academy of Sciences, Dolejskova 5, 182 00 Prague 8, Czech Republic

Аннотация

The present study focuses on the pulsatile round impinging jets. To enhance the impingement heat/mass transfer, a continual (steady) jet is combined with the synthetic (zero-net-mass-flux) jet. The resulting mixed pulsed jet has a significant non-zero blowing component: the ratio of the extrusion and suction mass fluxes at the actuator orifice exit is 3.1. Measurements of the flow field velocity and mass transfer on the wall (using flow visualization, hot-wire anemometry, and naphthalene sublimation technique) have been performed. The experiments demonstrate the anticipated heat/mass transfer enhancement caused by the coupling of the flow oscillation and the time-mean Reynolds number effects.

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