Emissions modeling of gas turbine combustors using a partially-premixed laminar flamelet model

1998 ◽  
Author(s):  
Timothy Held ◽  
Hukam Mongia
Keyword(s):  
Gas Turbine ◽  
Flamelet Model ◽  
Gas Turbine Combustors ◽  
Emissions Modeling ◽  
Partially Premixed ◽  
Premixed Laminar ◽  
Laminar Flamelet ◽  
Laminar Flamelet Model

scholarly journals Modeling of Spray Combustion with a Steady Laminar Flamelet Model in an Aeroengine Combustion Chamber Based on OpenFOAM

2018 ◽  
Vol 2018 ◽  
pp. 1-13
Author(s):  
Yinli Xiao ◽  
Zupeng Wang ◽  
Zhengxin Lai ◽  
Wenyan Song
Keyword(s):  
Combustion Chamber ◽  
High Performance ◽  
Numerical Models ◽  
Spray Combustion ◽  
Combustion Chambers ◽  
Flamelet Model ◽  
Steady Laminar ◽  
Good Agreement ◽  
Laminar Flamelet ◽  
Laminar Flamelet Model

The development of high-performance aeroengine combustion chambers strongly depends on the accuracy and reliability of efficient numerical models. In the present work, a reacting solver with a steady laminar flamelet model and spray model has been developed in OpenFOAM and the solver details are presented. The solver is firstly validated by Sandia/ETH-Zurich flames. Furthermore, it is used to simulate nonpremixed kerosene/air spray combustion in an aeroengine combustion chamber with the RANS method. A comparison with available experimental data shows good agreement and validates the capability of the new developed solver in OpenFOAM.

Steady-State Simulation of a Methane-Air Partially Premixed Turbulent Flame

2001 ◽  
Author(s):  
Graham Goldin ◽  
Dipankar Choudhury
Keyword(s):  
Steady State ◽  
Mixture Fraction ◽  
Turbulent Flame ◽  
Equilibrium Mixture ◽  
Flamelet Model ◽  
Jet Flame ◽  
Partially Premixed ◽  
Partially Premixed Flame ◽  
Steady State Simulation ◽  
Laminar Flamelet

Abstract Two steady-state simulations of a benchmark (Sandia Flame D) methane-air, turbulent, partially premixed flame are compared. The first uses an equilibrium mixture fraction model for the thermo-chemistry, while the second uses a steady, strained laminar-flamelet model. These non-premixed combustion models are coupled with a premixed reaction progress model to simulate a partially premixed jet flame. The laminar-flamelet approach predicts CO and H2 more accurately than the equilibrium model by accounting for the unbumt premixed stream within individual flamelets, and improved radical (such as OH) predictions by incorporating non-equilibrium chemistry effects due aerodynamic strain (fluid shear).

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