Results 21 to 30 of about 1,782 (225)

Thermal structure of flame spread in partially premixed atmospheres and effects of fuel Lewis number [PDF]

, 2014
The experimental study on the flame spread in partially premixed atmospheres was presented. Two samples of different filter thickness and density were used.
Yamamoto, Kazuhiro, Seo, Satoshi, Mori, Koichi   +2 more
core   +1 more source

Effects of porous insertion in a round-jet burner on flame characteristics of turbulent non-premixed syngas combustion

Case Studies in Thermal Engineering, 2019
Synthesis gas (Syngas) is a gaseous mixture that consists of 3 species. It is used in creating synthetic natural gas. In this work, the turbulent non-premixed flame of syngas-air combustion in a round-jet burner is numerically investigated. The burner is
Santiphong Klayborworn, Watit Pakdee
doaj   +1 more source

Large Eddy Simulation on Blow-Off Limit of Methane and Hydrogen-Mixed Gas

Shanghai Jiaotong Daxue xuebao, 2022
The blow-off limits of methane and hydrogen-mixed gas on the Sydney inhomogeneous inflow jet burner were calculated and studied by large eddy simulation.
ZHOU Xirui, WANG Ping, ZENG Haixiang, ZHANG Yang, PRASHANT Shrotriya, ANTONIO Ferrante, QI Haotian
doaj   +1 more source

The stochastic fields method applied to a partially premixed swirl flame with wall heat transfer [PDF]

, 2019
Large eddy simulations of a partially premixed flame are performed with the purpose of predicting the reacting flow in a swirl-stabilised, low emissions industrial gas turbine combustor.
Fredrich, Daniel, Jones, William, Marquis, Andrew   +2 more
core   +1 more source

Numerical simulation of the influence of partial premixing on the propagation of partially premixed flames

Computers & Mathematics with Applications, 2013
This paper is concerned with the analysis of the influence of a partial premixing between fuel and oxidizer at one of the boundaries of a porous walls channel. The mathematical formulation of this problem is performed by means of a constant-density thermodiffusive model under a single-step irreversible chemical reaction.
openaire   +2 more sources

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

Large Eddy Simulations of gaseous flames in gas turbine combustion chambers [PDF]

, 2012
Recent developments in numerical schemes, turbulent combustion models and the regular increase of computing power allow Large Eddy Simulation (LES) to be applied to real industrial burners.
Staffelbach, Gabriel, Gicquel, Laurent Y.M., Poinsot, Thierry   +2 more
core   +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