Inscrição na biblioteca: Guest
Início - ICHMT DL Ano atual Arquivos Comitê executivo Centro Internacional para Transferência de Calor e Massa

Turbulence control in the Taylor-Couette flow system

DOI: 10.1615/ICHMT.2015.THMT-15.1590
pages 715-718

Hamid Oualli
Ecole Militaire Polytechnique, Fluid Mechanics Laboratory, BP 17, 16046 Bordj El Bahri, Algiers, Algeria

Mahmoud Mekadem
Ecole Militaire Polytechnique, Fluid Mechanics Laboratory, BP 17, 16046 Bordj El Bahri, Algiers, Algeria

Ahcene Bouabdallah
USTHB / Faculty of Physique, LTSE Laboratory, BP 32, Bab Ezzouar, 16111, Algiers, Algeria

Mohamed Gad-el-Hak
Virginia Commonwealth University, Mechanical Engineering Richmond, VA 23284-3015, USA


The hydrodynamic stability of a viscous fluid flow in an annular space between a rotating inner cylinder and an outer fixed one is considered. The basic flow is axis-symmetric with two counter-rotating vortices each wavelength. Experiments are carried out together with numerical computations implemented using a finite-volume CFD code to simulate the flow under cross-sectional pulsatile solicitations. The controlling strategy consists in superimposing a radial pulsatile motion to the inner cylinder cross-section. It is aimed to tackle the transition process and to assess qualitative and quantitative effects of such a managing technique. As a result, transition to turbulence is substantially delayed with modulation of the inner cylinder cross-section. Turbulence state of the flow is thus postponed to largely higher values of the critical Taylor number.

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