On the stability range of a cylindrical combustor for operation in the flox regime
- Citation:
- Vaz, D.C.a b, Van Buijtenen Borges Spliethoff J. P. a A. "On the stability range of a cylindrical combustor for operation in the flox regime." Proceedings of the ASME Turbo Expo 2004. Vol. 1. 2004. 511-516.
Abstract:
The implementation of flameless combustion in gas turbines is a recent research topic motivated by the potential for ultra-low NO x emissions and improvement of the combustion acoustics. This paper presents preliminary results of the implementation of flameless oxidation in a laboratory model of a cylindrical combustor (in view of stationary and micro gas turbines). Guidelines are given for the start-up of this combustion system. The experimental study then assesses, for atmospheric conditions, the combined effect of the air-to-fuel ratio, wall temperature and jet velocity on combustion stability. Global volumetric heat releases up to 16 MW/m 3, and air preheat up to 265 °C are attained. The numerical simulations give insight into the recirculating pattern of the flow and the state of mixing of reactants and products in the near-nozzle region. The turbulence-chemistry interaction is accounted for by means of the non-premixed flamelet-PDF approach (including finite rate chemistry and scalar dissipation rates up to the extinction limit).
Notes:
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