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 (LES) of surface fire propagating through homogeneous grasslands

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.600
pages 552-561

Dominique Morvan
Aix-Marseille Université (AMU); Laboratoire MSNM-GP,UMR6181 CNRS,I.M.T. La Jetée,Technopôle de Château-Gombert; and Université de la Méditerranée, UNIMECA, Marseille, France

Sinopsis

The propagation of surface fire through homogeneous vegetation (grass) was simulated in 3D using a multiphase formulation and a LES approach. Formally the problem was approached, in considering that the coupled system formed by the vegetation and the surrounding atmosphere, can be assimilated as a sparse porous medium. The set of balance equations for mass, momentum, and energy, governing the behaviour of this system, was derived using a procedure similar to a homogenization method. Numerical simulations of surface fires were carried out on a flat terrain, in homogeneous combustible (grassland), in conditions similar than observed during experimental fires conducted in Australia. A large set of wind conditions U10 (evaluated 10m above the ground level and ranged between 1 and 10 m/s) has been tested. Various fire characteristics, such as the rate of spread and the fireline intensity, were compared with experimental data and other previous results from the literature.

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