LES/CMC of Blow-off in a Liquid Fueled Swirl Burner

Large Eddy Simulations of two-phase flames with the Conditional Moment Closure combustion model have been performed for flow conditions corresponding to stable and blow-off regimes in a swirl n-heptane spray burner. In the case of stable flame (i.e. low air velocity), the predicted mean and r.m.s. v...

Full description

Saved in:
Bibliographic Details
Published in:Flow, turbulence and combustion turbulence and combustion, 2014, Vol.92 (1-2), p.237-267
Main Authors: Tyliszczak, Artur, Cavaliere, Davide E., Mastorakos, Epaminondas
Format: Article
Language:English
Subjects:
Applied sciences
Automotive Engineering
Combustion
Constants
Energy
Energy. Thermal use of fuels
Engineering
Engineering Fluid Dynamics
Engineering Thermodynamics
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Extinction
Fluid- and Aerodynamics
Furnaces. Firing chambers. Burners
Heat and Mass Transfer
Large eddy simulation
Liquid fuel burners and combustion chambers
Mathematical models
Position (location)
Sprayers
Sprays
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Large Eddy Simulations of two-phase flames with the Conditional Moment Closure combustion model have been performed for flow conditions corresponding to stable and blow-off regimes in a swirl n-heptane spray burner. In the case of stable flame (i.e. low air velocity), the predicted mean and r.m.s. velocities and the location and shape of the flame agree reasonably well with experiment. In particular, the presence of localised extinctions is captured in agreement with experiment. Using model constants previously calibrated against piloted jet methane flames (Sandia F) with localised extinction, we obtain that at the experimentally determined blow-off velocity of the swirling spray flame, the predicted flame also blows off, demonstrating that the LES-CMC approach can capture the global extinction point in a realistic configuration.
ISSN:1386-6184
1573-1987
DOI:10.1007/s10494-013-9477-5