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Главная ICHMT DL Текущий год Архив Исполнительный Комитет ICHMT


Patrick Le Quere
LESTE UA CNRS 1098 Universite de Poitiers,40 av du Recteur Pineau,86022 Poitiers Cedex- France

Shihe Xin
Univ Lyon, CNRS, INSA-Lyon, Universite Claude Bernard Lyon 1, CETHIL UMR5008, F-69621, Villeurbanne, France

Emilie Gadoin
Lab. de Thermocinétique, UMR6607, EPUN, BP 50609, 44306 Nantes Cedex 3

Olivier Daube
LMEE - Université d'Evry - CE 1455 Courcouronnes - 91020 Evry Cedex; and LIMSI-CNRS, UPR 3251, BP 133, 91403 Orsay CEDEX, FRANCE

Laurette Tuckerman
LIMSI-CNRS, UPR 3251, BP 133, 91403 Orsay CEDEX, FRANCE


We present a general methodology for studying the hydrodynamic stability of flows enclosed in cavities. To this aim, different tools consisting of time integration of the unsteady equations, steady state solving, continuation, computation of the most unstable eigenmodes of the Jacobian and of its adjoint have been developed. These methodologies are implemented with different types of spatial approximations, Chebyshev and Fourier spectral methods for simple geometries and finite volume for complex ones. These tools are applied to the classical differentially heated cavity, where the steady solution branch is followed for very large values of the Rayleigh number and most unstable eigenmodes are computed at selected Rayleigh values. Their effectiveness for complex geometries is illustrated on a configuration consisting of a cavity with internal heated partitions. We also address the accurate determination of the critical parameters for aspect ratios comprised between 1 and 8, and the computation of adjoint eigenmodes which are instrumental for the purpose of flow manipulation and control.

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