Results 21 to 30 of about 32,261 (222)

Numerical Simulation of Premixed Methane–Air Explosion in a Closed Tube with U-Type Obstacles

Energies, 2022
Given the spatial structures and functional requirements, there are a number of different types of obstacles in long and narrow confined spaces that will cause a premixed gas explosion to produce greater overpressure and influence the flame behavior for ...
Bin Hao, Jianfen Gao, Bingang Guo, Bingjian Ai, Bingyuan Hong, Xinsheng Jiang   +5 more
doaj   +1 more source

Instability of lean H2-O2-CO2 premixed flames on a flat burner

Nihon Kikai Gakkai ronbunshu, 2015
Global warming and air pollution mainly caused by emissions of CO2 and NOx are serious problems. We focus on a lean H2-O2 premixed flame because H2-O2 premixed flame emits no CO2 and NOx.
Toshiyuki KATSUMI, Takahiro ENDO, Yuki NAKATANI, Satoshi KADOWAKI   +3 more
doaj   +1 more source

Comparison of the Reactive Scalar Gradient Evolution between Homogeneous MILD Combustion and Premixed Turbulent Flames

Energies, 2021
Moderate or intense low-oxygen dilution (MILD) combustion is a novel combustion technique that can simultaneously improve thermal efficiency and reduce emissions.
Hazem S.A.M. Awad, Khalil Abo-Amsha, Umair Ahmed, Nilanjan Chakraborty   +3 more
doaj   +1 more source

Large Eddy Simulation of combustion instabilities in a lean partially premixed swirled flame [PDF]

, 2012
This paper investigates one issue related to Large Eddy Simulations (LES) of self- excited combustion instabilities in gas-fueled swirled burners: the effects of incom- plete mixing between the gas injection and the combustion chamber.
Albouze, Angelberger, Benedetta Franzelli, Bilger, Boudier, Colin, Colin, di Mare, Eleonore Riber, Fiorina, Franzelli, Freitag, Galpin, Giauque, Granet, Kaufmann, Laurent Y.M. Gicquel, Lieuwen, Meier, Moureau, Moureau, Poinsot, Poinsot, Roux, Roux, Schmitt, Selle, Selle, Sengissen, Sengissen, Shreekrishna, Sommerer, Thierry Poinsot, Truffin, Westbrook, Williams, Wolf   +36 more
core   +3 more sources

Development of laminar burning velocity measurement system in premixed flames with hydrogen-content syngas or strong oxidizer conditions in a slot burner

Case Studies in Thermal Engineering, 2022
This study presents the experimental determination of laminar burning velocity for critical premixed flames with multiple fuels or strong oxidizers. Experiments were conducted with a slot burner under methane/air, methane/nitrous oxide, and syngas (CH4 ...
Yueh-Heng Li, Jin-Wei Liang, Hung-Ju Lin
doaj   +1 more source

Premixed-flame shapes and polynomials [PDF]

Physica D: Nonlinear Phenomena, 2015
The nonlinear nonlocal Michelson-Sivashinsky equation for isolated crests of unstable flames is studied, using pole-decompositions as starting point. Polynomials encoding the numerically computed 2N flame-slope poles, and auxiliary ones, are found to closely follow a Meixner Pollaczek recurrence; accurate steady crest shapes ensue for N>=3. Squeezed
Denet, Bruno, Joulin, Guy
openaire   +4 more sources

An experimental study on coflow diffusion combustion in a pellet-packed bed with different bed lengths [PDF]

Royal Society Open Science, 2018
In experimental investigations on axial symmetry, over-ventilated CH4/air diffusion combustion in a packed bed is executed to study the height, shape and stability of the flame.
Junrui Shi, Yang Liu, Yongqi Liu, Mingming Mao, Yongfang Xia, Rui Ma, Youning Xu   +6 more
doaj   +1 more source

Numerical Investigation on the Flame Structure and CO/NO Formations of the Laminar Premixed Biogas–Hydrogen Impinging Flame in the Wall Vicinity

Energies, 2021
The near-wall flame structure and pollutant emissions of the laminar premixed biogas-hydrogen impinging flame were simulated with a detailed chemical mechanism.
Zhilong Wei, Lei Wang, Hu Liu, Zihao Liu, Haisheng Zhen   +4 more
doaj   +1 more source

Characteristics Of Large Diffusion Flames Burning In A Vitiated Atmosphere [PDF]

, 1991
Experiments concerning properties of large diffusion flames burning steadily in a vitiated atmosphere under conditions similar to those which may arise in a room fire are described. The effects of vitiation on the products of combustion and flame lengths,
Kubota, T., Morehart, J. H., Zukoski, E. E.   +2 more
core   +1 more source

Modelling of turbulent lifted jet flames using flamelets: a priori assessment and a posteriori validation [PDF]

, 2014
This study focuses on the modelling of turbulent lifted jet flames using flamelets and presumed PDF approach with interests on both flame lift-off height and flame brush structure.
Darbyshire, O, Ruan, S, Swaminathan, N
core   +2 more sources