Analysis of the Effects of Wall Boundary Conditions and Detailed Kinetics on the Simulation of a Gas Turbine Model Combustor Under Very Lean Conditions

  • F. Rebosio
  • A. Widenhorn
  • B. Noll
  • M. Aigner


The numerical study presents the simulation of the DLR gas turbine model combustor operated at very lean conditions, near the lean extinction limit. The results have been validated against numerical data: while the hybrid LES-RANS model adopted for the turbulence closure demonstrated to be very well suited for such complex simulations, the combustion revealed to be dependent on the chemical kinetic mechanism adopted for the finite rate chemistry module. The latter was used in combination with the eddy dissipation model and it was possible to show that the flame root zone is mainly controlled by chemical kinetic effects.


Combustion Chamber Mixture Fraction ASME Turbo Expo Model Combustor Eddy Dissipation Concept 
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© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Institut für Verbrennungstechnik der Luft- und RaumfahrtUniversität StuttgartStuttgartGermany

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