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

RANS modeling of turbulent mixing for a jet in supersonic cross flow: model evaluation and uncertainty quantification

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.1830
pages 1794-1797

Catherine Gorle
Center for Turbulence Research, Stanford University, Stanford, CA 94305, USA; EMAT, University of Antwerp, Antwerp, Belgium von Karman Institute for Fluid Dynamics, Sint-Genesius-Rode, Belgium

Michael Emory
Department of Mechanical Engineering Institute for Computational Mathematical Engineering Stanford University Bldg 500, RM 500-I, Stanford CA 94305 - USA

Gianluca Iaccarino
Department of Mechanical Engineering Institute for Computational Mathematical Engineering Stanford University Bldg 500, RM 500-I, Stanford CA 94305 - USA

Resumo

In this paper a framework for epistemic uncertainty quantification (EUQ) of turbulent mixing models used in Reynolds-averaged Navier-Stokes (RANS) simulations is presented. The method consists of introducing perturbations in the values for the Reynolds stresses and scalar fluxes as obtained from their respective models. The range of perturbations is determined based on a comparison with large-eddy simulations (LES) data and the uncertainty is quantified by performing an optimization which varies the parameters in the perturbation functions to determine the minimum and maximum value of a quantity of interest that characterizes the downstream mixing.

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