Suscripción a Biblioteca: Guest
Página principal de la Biblioteca Digital de ICHMT Año actual Archivos Comité Ejecutivo Centro Internacional de Transferencia de Calor y Masa

Identification of material vortices

DOI: 10.1615/ICHMT.2015.THMT-15.80
pages 111-114

S. Hossbach
Department of Computational Fluid Dynamics, Technische Universitat Berlin, Muller-Breslau-Strasse 12, 10623 Berlin, Germany

R. Wilke
Department of Computational Fluid Dynamics, Technische Universitat Berlin, Muller-Breslau-Strasse 12, 10623 Berlin, Germany

J. Sesterhenn
Institute of Fluid Dynamics and Technical Acoustics, Technische Universität Berlin, Müller- Breslau-Str. 15, 10623, Berlin, Germany

Sinopsis

Our aim is to characterize the transport of passive scalars or particles by vortices. As an example we study the heat transfer from a heated plate due to an impinging turbulent jet in the high subsonic regime. Common vortex identification schemes rely on invariants of the velocity gradient tensor. They are Gallilean invariant but material derivatives which follow clusters of particles or patches of heat also involve time dependent rotations of the observing frame. Therfore we seek for objective criteria. One possibility is the vortex identification by Haller (2005). It was derived for incompressible flows and in this contribution we seek a relaxation of that constraint.

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