The IRST model for turbulent premixed non-adiabatic methane flames

A model is presented to predict turbulent non-adiabatic premixed combustion of methane under gas turbine conditions. Chemical reaction and heat loss are described with four independent scalar variables. These are the enthalpy variable and three reaction progress variables for combustion of methane....

Full description

Saved in:
Bibliographic Details
Published in:Combustion science and technology 1999-12, Vol.149 (1-6), p.225-247
Main Authors: KOK, JIM B.W, LOUIS, JUBGEN J.J, YU, JIANG HONG
Format: Article
Language:English
Subjects:
Applied sciences
Combustion of gaseous fuels
Combustion. Flame
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Theoretical studies. Data and constants. Metering
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:A model is presented to predict turbulent non-adiabatic premixed combustion of methane under gas turbine conditions. Chemical reaction and heat loss are described with four independent scalar variables. These are the enthalpy variable and three reaction progress variables for combustion of methane. hydrogen and carbon monoxide. In the combustion model turbulence is taken into account by weighting with an assumed shape PDF. The model is used to calculate a 32 kW methane flame in an air cooled combustion chamber. The calculated CO. CO 2 , O 2 and NO x concentrations are compared with suction probe measurements at several locations in the combustion chamber. The non-adiabatic calculations and the measurements show good agreement. Adiabatic calculations show a significant overprediction of NO. Radial profiles of mean axial velocity and turbulent kinetic energy were measured with a 2D LDA system. The measurements show a good agreement. It is concluded that the non-adiabatic model is necessary and suitable to predict NO formation in turbulent premixed methane flames with heat loss.
ISSN:0010-2202
1563-521X
DOI:10.1080/00102209908952107