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Title: Flow characteristics of an annular gas turbine combustor model for reacting flows using CFD
Authors: Singh, S N
Seshadri, V
Singh, R K
Mishra, T
Keywords: Annular gas turbine combustor
Computational fluid dynamics
Liner holes
Species concentration
Temperature contours
Issue Date: Nov-2006
Publisher: CSIR
IPC CodeF15D1/00; G09B23/08
Abstract: Computational Fluid Dynamics (CFD) approach can reduce the expenses as well as time to provide an insight into the characteristics of flow and combustion process inside combustion chamber at design stage. Geometry of combustor simulated for present investigation is a 45° sector of an annular combustor. Primary, secondary and dilution holes are simulated on the inner and outer liner walls with swirler being placed at the center of the liner dome. Flow has been analyzed in the annulus region. The results are fed as input for the flow analysis in the liner. Uniform velocity distribution is obtained in the annulus passage around the liner. For the liner flow, it is observed that on moving axially from nozzle to outlet, velocity and temperature contours become more uniform and symmetric in circumferential plane. Mass fraction of CH4 and O2 decreases whereas concentration of CO2, NO and H2O increases in the axial direction (nozzle to outlet).
Page(s): 921-934
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Source:JSIR Vol.65(11) [November 2006]

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