Results 201 to 210 of about 592,637 (278)

Impact of a discretisation method and chemical kinetics on the accuracy of simulation of a lifted hydrogen flame

Combustion theory and modelling, 2023
This paper presents an analysis of numerical and modelling issues based on a simulation of nitrogen-diluted hydrogen lifted flame evolving in a hot co-flow.
A. Tyliszczak, A. Wawrzak, K. Wawrzak
semanticscholar   +1 more source

Numerical Simulations of a Lifted Hydrogen Jet Flame Using Flamelet Generated Manifold Approach

Journal of Engineering For Gas Turbines and Power, 2022
A turbulent lifted H2/N2 jet flame in a vitiating co-flow environment is numerically investigated, using the Flamelet Generated Manifold (FGM) combustion model with Large Eddy Simulations (LES).
Yu Xia, Ishan Verma, Pravin M. Nakod, Rakesh Yadav, Stefano Orsino, Shaoping Li   +5 more
semanticscholar   +1 more source

Flame Stabilization Mechanisms in Lifted Flames

Flow, Turbulence and Combustion, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Navarro-Martinez, Salvador, Kronenburg, Andreas   +1 more
openaire   +2 more sources

Leading-Edge Flame Fluctuations in Lifted Turbulent Flames

Combustion Science and Technology, 2010
Studies are presented that examine the fluctuations in liftoff height of lifted methane flames in the presence of air coflow. At a certain jet exit velocity, a flame will lift from the burner exit and stabilize at some downstream position. The partially-premixed flame front of the lifted flame oscillates in the axial direction, with the fluctuations ...
N. J. Moore, K. M. Lyons
openaire   +1 more source

Flow Structure of Lifted Swirling Jet Flames

Flow, Turbulence and Combustion, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Vanoverberghe, K., Van den Bulck, E., Tummers, M.   +2 more
openaire   +2 more sources

Large-Eddy Simulation of a Lifted High-Pressure Jet-Flame with Direct Chemistry

Combustion Science and Technology, 2021
A large-eddy simulation is presented of a challenging high-pressure jet flame case that is representative of state of the art, dry low-NO x and low-CO real gas turbine combustion.
Pascal Gruhlke, H. Janbazi, P. Wollny, I. Wlokas, C. Beck, B. Janus, Achim Kempf   +6 more
semanticscholar   +1 more source

Dynamics of Flame Lift-Off in Biogas Swirl Flames

51st AIAA/SAE/ASEE Joint Propulsion Conference, 2015
Lift-off limits and mechanism of biogas swirl flames were investigated in a gas turbine model combustor using high-repetition-rate OH* chemiluminescence and simultaneous particle image velocimetry (PIV) and OH planar laser induced fluorescence (PLIF). The biogas fuel was represented by 60% methane and 40% carbon dioxide, volumetrically. The test matrix
Qiang An, Benjamin D. Geraedts, Adam M. Steinberg   +2 more
openaire   +1 more source

Lifting criteria of jet diffusion flames

Symposium (International) on Combustion, 1991
The lifting mechanisms of methane/air coflow jet diffusion flames have been studied based on the three-component laser-Doppler velocimetry measurement with conditional seeding under near-limit conditions. Three distinct types of flame lifting behaviors were observed, i.e., (1) the lifting according to the flame-base stability mechanism previously ...
Fumiaki Takahashi, W. John Schmoll
openaire   +1 more source

Large eddy simulation of a supersonic lifted hydrogen flame: Impacts of Lewis, turbulent Schmidt and Prandtl numbers

The Physics of Fluids
Parametric large eddy simulations (LES) of a supersonic lifted hydrogen flame are reported. The emphases are on two aspects: impacts of (1) Lewis number (Lei of the ith species) and (2) turbulent Schmidt and Prandtl numbers (Sct and Prt) on supersonic ...
Ruixuan Zhu, Zhiwei Huang, Chao Xu, X. Fang, Huangwei Zhang, M. Davy   +5 more
semanticscholar   +1 more source

Stabilization of lifted turbulent-jet flames

Combustion and Flame, 1994
Abstract Planar imaging measurements of CH, CH4, and temperature are used to evaluate current models for flame stabilization in lifted, turbulent CH4-jet flames. The experimental system consists of two cameras that simultaneously record the instantaneous distributions of species concentration and temperature. Measurements were made in two flames with
R.W. Schefer, M. Namazian, J. Kelly
openaire   +1 more source