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

Entropy generation in a flow transitioning downstream of a rib

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.720
pages 672-682

Stefan Becker
Institute of Process Machinery and System Engineering (iPAT), Friedrich-Alexander University, D-91058 Erlangen, Deutschland

Donald M. McEligot
Aerospace and Mechanical Engineering Department, University of Arizona,Tucson, AZ 85721; Idaho National Laboratory (INL), Idaho Falls, ID 83415-3885, USA; and Institut für Kernenergetik und Energiesysteme, Universitat Stuttgart, Stuttgart, Germany

Edmond J. Walsh
Stokes Research Institute, Mechanical and Aeronautical Engineering Department, University of Limerick, Limerick, Ireland

Eckart Laurien
Inst. für Kernenergetik u. Energiesysteme (IKE), Uni. Stuttgart, D-70550 Stuttgart, Germany


The entropy generation downstream of a two-dimensional square rib of height k+ ≈ 14.2 was deduced from laser Doppler velocimetry data. This flow involves interaction between the shear layer evolving over the rib and the transitioning wall boundary layer growing after reattachment. At the last station, x* = (x − xk)/k ≈ 138, deduced values of entropy generation rates agreed with expectations for developed turbulent boundary layers where a common approximate prediction technique becomes adequate. However, as with bypass transition, this technique overpredicted the integral entropy generation rate during transition since it neglects a term for convection of turbulent kinetic energy that is significant.

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