Results 21 to 30 of about 559 (165)

A Computational Fluid Dynamics Study of Turbulence, Radiation, and Combustion Models for Natural Gas Combustion Burner

Bulletin of Chemical Reaction Engineering & Catalysis, 2018
This paper presents a Computational Fluid Dynamics (CFD) study of a natural gas combustion burner focusing on the effect of combustion, thermal radiation and turbulence models on the temperature and chemical species concentration fields.
Yik Siang Pang, Woon Phui Law, Kang Qin Pung, Jolius Gimbun   +3 more
doaj   +1 more source

Effects of fuel-hydrogen levels on combustion, operability, and emission parameters of CH4/H2/O2/CO2 stratified flames in a dual-swirl gas turbine burner

Engineering Applications of Computational Fluid Mechanics, 2023
Towards the development of emission-free hydrogen gas turbines with wider operability limits, the combined effects of lean premixed combustion, dual combustion (combustion staging), hydrogen enrichment, and oxy-fuel combustion on the combustion and ...
Medhat A. Nemitallah, Sami K. Aljehani, Md Azazul Haque   +2 more
doaj   +1 more source

Measurement and Identification of Flame Describing Function (FDF) Based on Parallel Subsystem Model

Aerospace
Because of the need for low pollutant emissions, industrial gas turbines typically use partially premixed gases for combustion. However, the nonlinear dynamic characteristics of partially premixed flames have not been studied sufficiently.
Zhaohui Wang, Yichen Wang, Min Zhu
doaj   +1 more source

Effects of Partial Premixing and Coflow Temperature on Flame Stabilization of Lifted Jet Flames of Dimethyl Ether in a Vitiated Coflow Based on Stochastic Multiple Mapping Conditioning Approach

Fluids
The Reynolds-averaged Navier–Stokes (RANS)-based stochastic multiple mapping conditioning (MMC) approach has been used to study partially premixed jet flames of dimethyl ether (DME) introduced into a vitiated coflowing oxidizer stream.
Sanjeev Kumar Ghai, Rajat Gupta, Santanu De   +2 more
doaj   +1 more source

Lifted flame property and interchangeability of natural gas on partially premixed gas burners

Case Studies in Thermal Engineering, 2018
The relationship between lifted flames and burner head temperature of partially premixed gas burners supplied by various natural gas sources was investigated, and the application of AGA(American Gas Association) lifting limit for Chinese domestic gas ...
Zhiguang Chen, Chaokui Qin, Pengfei Duan
doaj   +1 more source

Flame stability and equivalence ratio assessment of turbulent partially premixed flames

Fuel, 2022
This study is geared toward generating highly stabilized partially premixed flames at various levels of turbulence and partially premixing. Therefore, with the help of the laser-induced breakdown spectroscopy (LIBS) technique, a new burner was constructed and employed to quantitatively estimate the mixture equivalence ratio (Φ) within the flame.
Badawy, Tawfik, Hamza, Mahmoud, Mansour, Mohy S., Elbaz, Ayman M., Turner, James W. G., Fayad, Mohammed A., Al Jubori, Ayad M., Daabo, Ahmed M., Wang, Ziman, Wang, Chongming   +9 more
openaire   +2 more sources

Methane-air flame thermometry using planar lase-induced fluorescence (PLIF)

MATEC Web of Conferences, 2018
Temperature measurements were performed in a central cross-section of a partially premixed atmospheric methane-air flame of a laboratory burner using two-line planar laser-induced fluorescence (PLIF) of OH radicals and coherent anti-Stokes Raman ...
Fabelinsky Victor, Kobtsev Vitaly, Kostritsa Sergey, Kozlov Dimitrii, Smirnov Valerii, Vereschagin Konstantin   +5 more
doaj   +1 more source

Explore artificial neural networks for solving complex hydrocarbon chemistry in turbulent reactive flows

Fundamental Research, 2022
Global warming caused by the use of fossil fuels is a common concern of the world today. It is of practical importance to conduct in-depth fundamental research and optimal design for modern engine combustors through high-fidelity computational fluid ...
Jian An, Fei Qin, Jian Zhang, Zhuyin Ren
doaj   +1 more source

Partially-Premixed Flames in Internal Combustion Engines [PDF]

, 2003
This was a joint university-industry research program funded by the Partnerships for the Academic-Industrial Research Program (PAIR). The research examined partially premixed flames in laboratory and internal combustion engine environments at Vanderbilt University, University of Michigan, and General Motors Research and Development.
Pitz, Robert W., Drake, Michael C., Fansler, Todd D., Sick, Volker   +3 more
openaire   +2 more sources

Experimental Analysis on Flame Flickering of a Swirl Partially Premixed Combustion

Energies, 2018
An experiment was conducted to explore the flickering parameters under varying mass flow rate of fuel m ˙ F with spatial analysis and global analysis.
Zhongya Xi, Zhongguang Fu, Syed Waqas Sabir, Xiaotian Hu, Yibo Jiang, Tao Zhang   +5 more
doaj   +1 more source