Manifold assumptions in modeling radiation heat losses in turbulent nonpremixed combustion

2019 ◽  
Vol 37 (2) ◽  
pp. 2223-2230 ◽  
Author(s):  
A. Cody Nunno ◽  
Michael E. Mueller
Keyword(s):  
Heat Losses ◽  
Radiation Heat ◽  
Nonpremixed Combustion ◽  
Turbulent Nonpremixed

A test of a flamelet model for turbulent nonpremixed combustion☆

1994 ◽  
Vol 96 (1-2) ◽  
pp. 104-120 ◽  
Author(s):  
Y BURIKO ◽  
V KUZNETSOV ◽  
D VOLKOV ◽  
S ZAITSEV ◽  
A URYVSKY
Keyword(s):  
Flamelet Model ◽  
Nonpremixed Combustion ◽  
Turbulent Nonpremixed

scholarly journals Large-eddy simulation of transcritical liquid oxygen/methane jet flames

2019 ◽  
Author(s):  
H. Müller ◽  
M. Pfitzner
Keyword(s):  
Computational Cost ◽  
Liquid Oxygen ◽  
Test Case ◽  
Rocket Engines ◽  
Flamelet Model ◽  
Nonpremixed Combustion ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Flow Features ◽  
Turbulent Nonpremixed

A numerical method to perform large-eddy simulations (LES) of nonpremixed liquid oxygen/methane (LOx/CH4) combustion at supercritical pressures is presented and the computational results are compared with available experimental data. The injection conditions of the considered test case resemble those in typical liquid-propellant rocket engines (LRE). Thermodynamic nonidealities are modeled using the Peng–Robinson (PR) equation of state (EoS) in conjunction with a novel volume-translation method to correct deficiencies in the transcritical regime. The resulting formulation is more accurate than the standard cubic EoS's without deteriorating their good computational efficiency. The real-gas thermodynamics model is coupled with the steady laminar flamelet model (SLFM) for turbulent nonpremixed combustion to incorporate chemical reactions at reasonable computational cost in the LES. A reduced reaction mechanism, which is validated with respect to the full mechanism, is used to generate a flamelet library. A comparison of the LES result with available OH* measurements shows that important flow features are well predicted.

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