Large eddy simulation for turbulent non-premixed fuel-rich combustion in a cylindrical combustor

Large eddy simulation for turbulent non-premixed fuel-rich combustion in a cylindrical combustor

Paul, S.C.
Paul, M.C.
Jones, W.P.

2006-09-07

In this work we investigate turbulent non-premixed combustion, including species concentrations and temperature, in a model of 3D cylindrical combustor. Gaseous propane (C3H8) and preheated air with temperature of 773K are injected through the combustor inlet. A Large Eddy Simulation (LES) technique is applied to solve the governing equations of motion while the filtered values of species mass fraction, temperature and density, which are functions of the mixture fraction, are determined by integration over a beta Probability Density Function (beta-PDF). In LES a spatial filter is used to the governing equations to separate the large scale eddies from the small scale eddies. The large scale eddies which carry most of the turbulent energy are resolved explicitly while the small scale eddies are modelled. The computational results are compared with those of the experimental investigation where a good agreement is achieved.

large eddy simulation
turbulent flow
combustion
beta probability density function
subgrid scale stress

http://resolver.tudelft.nl/uuid:f3fafa03-3f67-4629-b254-b0753a5ca838

Conference proceedings

conference paper

(c) 2006 Paul, S.C.; Paul, M.C.; Jones, W.P.