Numerical Study of Unsteady Properties of Ethylene/Air Turbulent Jet Diffusion Flame with Detached Eddy Simulation
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Sugang Ma
und
Xinyu Zhang
Abstract
In this paper, unsteady process of ignition and combustion of turbulent plane-jet diffusion flame of ethylene/air is numerically simulated with detached eddy simulation (DES) and a reduced kinetic mechanism of ethylene. The kinetic mechanism consisting of 25 species and 131 steps is reduced from a 25 species/131 steps detailed mechanism via the method of error-propagation-based directed relation graph (DRGEP). The DES results of averaged temperature profiles at varied downstream locations are compared with the DNS results of Yoo et al. [11] and satisfactory agreement between them is found. Ignition and combustion of ethylene plane-jet diffusion flame is simulated and dynamic changes of temperature field and OH radical are obtained. The present numerical study shows that DES method with a qualified reduced mechanism of hydrocarbon fuels can effectively simulate temporal and spatial evolution of ignition and combustion process.
Funding statement: Funding: This study was presented at APCATS 2015 (www.apcats2015.or.kr) and was funded by Natural Science Foundation of China under Contract No. 11172309 and 91441102.
Nomenclature
- T
average temperature profile
- δ1/2
local jet half-width
- t
time
References
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©2016 by De Gruyter
Artikel in diesem Heft
- Frontmatter
- Full-Range Mathematical Modeling of Turboshaft Engine in Aerospace
- Modeling and HIL Simulation of Flight Conditions Simulating Control System for the Altitude Test Facility
- Investigation of Detailed Flow in a Variable Turbine Nozzle
- A Study on the Installed Performance Seeking Control for Aero-Propulsion under Supersonic State
- Study of the Standard k-ε Model for Tip Leakage Flow in an Axial Compressor Rotor
- Experimental Study of Propulsion Performance by Single-Pulse Rotating Detonation with Gaseous Fuels-Oxygen Mixtures
- Finite Element Analysis for Turbine Blades with Contact Problems
- CFD Modeling of Mixed-Phase Icing
- Effect of Steam Addition on the Flow Field and NOx Emissions for Jet-A in an Aircraft Combustor
- An Integrated Optimization Design Method Based on Surrogate Modeling Applied to Diverging Duct Design
- Numerical Study of Unsteady Properties of Ethylene/Air Turbulent Jet Diffusion Flame with Detached Eddy Simulation
- Influence of Rotor-Stator Interaction on Flow Stability in Centrifugal Pump Based on Energy Gradient Method
Artikel in diesem Heft
- Frontmatter
- Full-Range Mathematical Modeling of Turboshaft Engine in Aerospace
- Modeling and HIL Simulation of Flight Conditions Simulating Control System for the Altitude Test Facility
- Investigation of Detailed Flow in a Variable Turbine Nozzle
- A Study on the Installed Performance Seeking Control for Aero-Propulsion under Supersonic State
- Study of the Standard k-ε Model for Tip Leakage Flow in an Axial Compressor Rotor
- Experimental Study of Propulsion Performance by Single-Pulse Rotating Detonation with Gaseous Fuels-Oxygen Mixtures
- Finite Element Analysis for Turbine Blades with Contact Problems
- CFD Modeling of Mixed-Phase Icing
- Effect of Steam Addition on the Flow Field and NOx Emissions for Jet-A in an Aircraft Combustor
- An Integrated Optimization Design Method Based on Surrogate Modeling Applied to Diverging Duct Design
- Numerical Study of Unsteady Properties of Ethylene/Air Turbulent Jet Diffusion Flame with Detached Eddy Simulation
- Influence of Rotor-Stator Interaction on Flow Stability in Centrifugal Pump Based on Energy Gradient Method
