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

Large Eddy Simulation of Supersonic Jet Plumes from Rectangular Con-Di Nozzles

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.1840
pages 1798-1808

P. C. Wang
Dept. Of Aero. & Auto. Eng., Loughborough Univ., Leicestershire, LE11 3TU, United Kingdom

James J. McGuirk
Department of Aeronautical and Automotive Engineering, Loughborough University, Leicestershire, United Kingdom

Sinopsis

A Large Eddy Simulation investigation is described for a supersonic jet discharging from a rectangular convergent-divergent nozzle at Nozzle Pressure Ratios (NPRs) typical of military aircraft propulsion. Accurate inlet conditions and Sub-Grid Scale modelling, as well as appropriate mesh design are essential for good LES predictions. The present work adopts an LES inlet condition generation method based on a rescaling/recycling method (R2M) and the Piomelli and Guerts SGS model (PGSGS), which has the attractive feature of being independent of filter width, but has not previously been used in free shear flow. Results show that the R2M technique was able to generate an unsteady 3D velocity field at the nozzle inlet plane which matched available experimental data and possessed physically consistent spatial and temporal correlations. Using an appropriately refined mesh, turbulence was sustained through the nozzle, enabling good prediction of the nozzle exit boundary layer state and the near field jet plume development. The PGSGS model was observed to improve predictions compared to the standard Smagorinsky SGS model.

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