Numerical Investigation of Combustion Noise and Sound Source Mechanisms in a Non-Premixed Flame Using LES and APE-RF

2007 ◽  
Author(s):  
Thanh Bui ◽  
Matthias Ihme ◽  
Matthias Meinke ◽  
Wolfgang Schroeder ◽  
Heinz Pitsch
Keyword(s):  
Numerical Investigation ◽  
Sound Source ◽  
Combustion Noise ◽  
Premixed Flame ◽  
Source Mechanisms

scholarly journals A Numerical Investigation on Characteristics of Turbulent Premixed Flame in Porous Media

2015 ◽  
Vol 66 ◽  
pp. 265-268
Author(s):  
Zhong-Shan Chen ◽  
Mao-Zhao Xie ◽  
Hong-Sheng Liu ◽  
Meng Yue
Keyword(s):  
Porous Media ◽  
Numerical Investigation ◽  
Premixed Flame ◽  
Turbulent Premixed Flame ◽  
Turbulent Premixed

Numerical Investigation of Effect Pilot Injection on Combustion Noise and Exhaust Emission of Diesel Engine

2012 ◽  
Vol 472-475 ◽  
pp. 1528-1531
Author(s):  
Tie Min Xuan ◽  
Zhi Xia He ◽  
Zhao Chen Jiang ◽  
Yi Yan
Keyword(s):  
Diesel Engine ◽  
Numerical Investigation ◽  
Fuel Injection ◽  
Numerical Models ◽  
Combustion Noise ◽  
Exhaust Emission ◽  
Pilot Injection ◽  
Engine Combustion ◽  
Emission Models ◽  
Injection Strategies

Numerical Investigation of Effect Pilot Injection on Combustion Noise and Exhaust Emission of Diesel Engine The traditional mechanical fuel supply system has already been no way to satisfy the requirement of more stringent fuel consumption and emission legislation. For the past few years, it has been a hot topic to improve performance of diesel engine combustion and emission through optimizing the fuel injection strategy. All kinds of spray, combustion and emission models were studied and then the numerical models for the single-injection combustion of 1015 diesel engine were setup and validated through comparing with results from experimental data. With the above verified models, different injection strategies were further investigated to get the effect mechanism of pilot injection (PI) timing and quantity on combustion noise and exhaust emission.

Efficient Combustion Noise Simulation of a Gas Turbine Model Combustor Based on Stochastic Sound Sources

2015 ◽  
Author(s):  
Felix Grimm ◽  
Roland Ewert ◽  
Jürgen Dierke ◽  
Gilles Reichling ◽  
Berthold Noll ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Sound Source ◽  
Sound Propagation ◽  
Hybrid Approach ◽  
Particle Method ◽  
Combustion Noise ◽  
Equation Modeling ◽  
Source Modeling ◽  
Sound Sources ◽  
Turbine Model

A gas turbine model combustor is simulated with a hybrid, stochastic and particle-based method for combustion noise prediction with full 3D sound source modeling and sound propagation. Alongside, an incompressible LES simulation of the burner is considered for the investigation of the performance of the hybrid approach. The highly efficient time-domain method consists of a stochastic sound source reconstruction algorithm, the Fast Random Particle Method (FRPM) and sound wave propagation via Linearized Euler Equations (LEEs). In the context of this work, the method is adapted and tested for Combustion Noise (CN) prediction. Monopole sound sources are reconstructed by using an estimation of turbulence statistics from reacting CFD-RANS simulations. First, steady state and unsteady CFD calculations of flow field and combustion of the model combustor are evaluated and compared to experimental results. Two equation modeling for turbulence and the EDM (Eddy Dissipation Model) with FRC (Finite Rate Chemistry) for combustion are employed. In a second step, the acoustics simulation setup for the model combustor is introduced. Selected results are presented and FRPM-CN pressure spectra are compared to experimental levels.

Experimental and numerical investigation of premixed flame propagation with distorted tulip shape in a closed duct

2012 ◽  
Vol 159 (4) ◽  
pp. 1523-1538 ◽  
Author(s):  
Huahua Xiao ◽  
Dmitriy Makarov ◽  
Jinhua Sun ◽  
Vladimir Molkov
Keyword(s):  
Numerical Investigation ◽  
Flame Propagation ◽  
Premixed Flame

Numerical investigation of combustion noise from aeronautical combustor to far-field

2016 ◽  
Author(s):  
Mélissa Férand ◽  
Thomas Livebardon ◽  
Stephane Moreau ◽  
Thierry Poinsot ◽  
Claude Sensiau
Keyword(s):  
Numerical Investigation ◽  
Combustion Noise ◽  
Far Field
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