Abonnement à la biblothèque: Guest
Page d'accueil ICHMT DL Année en cours Archives Comité de direction Centre international pour le transfert de chaleur et de masse

TAYLOR-TYPE INSTABILITY EFFECT ON THE TWO-PHASE FLOW PATTERN IN THE HEATED POROUS MEDIA

DOI: 10.1615/ICHMT.1996.TransientConvHeatTransf.170

L. A. Bolshov
Nuclear Safety Institute, Russian Academy of Sciences, Bolshaya Tulskaya 52, Moscow 113191, Russia

Vladimir V. Likhanskii
National Research Center of Russian Federation "TRINITI", Troitsk Institute for Innovation and Thermonuclear Researches, Troitsk, Moscow Reg., Russia

A. V. Moskovchenko
Russian Academy of Sciences, Nuclear Safety Institute, 52 Bol'shaya Tul'skaya, 113191 Moscow, Russia

V. F. Strizhov
Nuclear Safety Institute, Russian Academy of Sciences, Bolshaya Tul'skaya 52, Moscow 113191, Russia

Résumé

Heat transfer capability of the convective boiling mechanism in the porous media is limited by the flooding phenomenon or/and frictional coupling between the phase flows. This limitation is strongly influenced by the two-phase flow pattern establishment which depends upon a set of factors, such as the boundary conditions and pore size. In this work it is considered a situation where subcooled liquid penetrates from above in the porous layer heated from below. It is shown that Taylor type instability may initiate a non-homogeneous liquid penetration in the layer in the form of columns which are spatially separated by a scale of wavelength of faster growing instability perturbation. This effect make less critical flooding limitation in the case of relatively small pore sizes because of phase flows friction diminishing in the separated phase-flow mode.

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