Large-eddy simulation of MILD combustion using partially stirred reactor approach

2019 ◽  
Vol 37 (4) ◽  
pp. 4507-4518 ◽  
Author(s):  
Hao Lu ◽  
Chun Zou ◽  
Shujing Shao ◽  
Hong Yao
Keyword(s):  
Large Eddy Simulation ◽  
Eddy Simulation ◽  
Mild Combustion ◽  
Stirred Reactor ◽  
Large Eddy ◽  
Partially Stirred Reactor

scholarly journals Large Eddy simulation of a supersonic lifted hydrogen flame with perfectly stirred reactor model

2021 ◽  
Vol 230 ◽  
pp. 111441
Author(s):  
Majie Zhao ◽  
Zhi X. Chen ◽  
Huangwei Zhang ◽  
Nedunchezhian Swaminathan
Keyword(s):  
Large Eddy Simulation ◽  
Reactor Model ◽  
Eddy Simulation ◽  
Stirred Reactor ◽  
Large Eddy ◽  
Hydrogen Flame

scholarly journals Large eddy simulation of the flameless oxidation in the IFRF furnace with varying inlet conditions

2016 ◽  
Vol 9 (2) ◽  
pp. 102-115 ◽  
Author(s):  
Reza Kamali ◽  
Seyed M Mousavi ◽  
Ali R Binesh ◽  
Javad Abolfazli-Esfahani
Keyword(s):  
Large Eddy Simulation ◽  
Oxidation Process ◽  
Fuel Temperature ◽  
Discrete Ordinate ◽  
Simulation Methodology ◽  
Eddy Simulation ◽  
Stirred Reactor ◽  
Large Eddy ◽  
Vertical Injection ◽  
Inlet Conditions

In the present study, large eddy simulation methodology is applied to investigate the 3D non-premixed flameless oxidation in the IFRF furnace. In order to serve this purpose, to model the combustion and radiation, the partially stirred reactor and finite volume discrete ordinate model are used, respectively.Moreover, the detailed mechanism of GRI-2.11 is undertaken to represent chemistry reactions. The present simulations agree qualitatively well with published experimental data. Finally, the present study focusses on the assessment of the effects of variations in the fuel vertical injection by adding an inert gas as well as the fuel temperature on combustion behavior. The results revealed that important changes occur in the characteristics of the flameless oxidation process.

scholarly journals Large Eddy Simulation of a Swirl-Stabilized Pilot Combustor from Conventional to Flameless Mode

2016 ◽  
Vol 2016 ◽  
pp. 1-16 ◽  
Author(s):  
Ehsan Fooladgar ◽  
C. K. Chan
Keyword(s):  
High Temperature ◽  
Large Eddy Simulation ◽  
Turbulent Flame ◽  
Combustion Model ◽  
Lean Premixed Combustion ◽  
Eddy Simulation ◽  
Stirred Reactor ◽  
Wide Range ◽  
Large Eddy ◽  
One Step

This paper investigates flame and flow structure of a swirl-stabilized pilot combustor in conventional, high temperature, and flameless modes by means of a partially stirred reactor combustion model to provide a better insight into designing lean premixed combustion devices with preheating system. Finite rate chemistry combustion model with one step tuned mechanism and large eddy simulation is used to numerically simulate six cases in these modes. Results show that moving towards high temperature mode by increasing the preheating level, the combustor is prone to formation of thermalNOxwith higher risks of flashback. In addition, the flame becomes shorter and thinner with higher turbulent kinetic energies. On the other hand, towards the flameless mode, leaning the preheated mixture leads to almost thermalNOx-free combustion with lower risk of flashback and thicker and longer flames. Simulations also show qualitative agreements with available experiments, indicating that the current combustion model with one step tuned mechanisms is capable of capturing main features of the turbulent flame in a wide range of mixture temperature and equivalence ratios.

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