Results 71 to 80 of about 61,190 (204)

Turbulent and Stable/Unstable Laminar Burning Velocity Measurements from Outwardly Propagating Spherical Hydrogen-Air Flames at Elevated Pressures

Journal of Thermal Science and Technology, 2006
The laminar burning velocity of pre-mixed hydrogen-air mixtures was measured in a fan stirred combustion bomb. Unstretched laminar burning velocities and Markstein lengths were obtained at 0.10MPa for equivalence ratios of 0.4, 0.6, 0.8 and 1.0 using ...
Andrew SMALLBONE, Kousaku TSUNEYOSHI, Toshiaki KITAGAWA   +2 more
doaj   +1 more source

Topology and flame speeds of turbulent premixed flame kernels in supersonic flows

Combustion and Flame, 2019
Abstract Premixed flame kernels exposed to a mean expanding supersonic channel flow are examined using experiments and large-eddy simulations. Four cases, spanning three Mach numbers and two equivalence ratios, are explored. Numerical results are processed similarly to and compared with experimental data.
Bradley A. Ochs, Reetesh Ranjan, Devesh Ranjan, Suresh Menon   +3 more
openaire   +2 more sources

Simultaneous In-Cylinder Flow Measurement and Flame Imaging in a Realistic Operating Engine Environment Using High-Speed PIV

Applied Sciences, 2019
Among multiple factors that affect the quality of combustion, the intricate and complex interaction between in-cylinder flow/turbulent field and flame propagation is one of the most important.
Atsushi Nishiyama, Minh Khoi Le, Takashi Furui, Yuji Ikeda   +3 more
doaj   +1 more source

Numerical Simulation of Flow and Flame Dynamics of a Pool Fire Under Combined Effects of Wind and Slope

Fire
Wind has a significant effect on pool fire behavior, which is relevant to many fire conditions, such as wildfires, building fires, and oil transportation fires.
Yujia Sun, Lin Jiang, Yue Chen
doaj   +1 more source

Displacement speeds in turbulent premixed flame simulations

, 2008
The theory of turbulent premixed flames is based on a characterization of the flame as a discontinuous surface propagating through the fluid. The displacement speed, defined as the local speed of the flame front normal to itself, relative to the unburned fluid, provides one characterization of the burning velocity.
Day, Marcus S., Shepherd, Ian G., Bell, J., Grcar, Joseph F., Lijewski, Michael J.   +4 more
openaire   +1 more source

Statistics of local and global flame speed and structure for highly turbulent H2/air premixed flames

, 2021
Wonsik Song, F. H. Pérez, Alexandros-Efstathios Tingas, H. Im   +3 more
semanticscholar   +1 more source

The Interaction of High-Speed Turbulence with Flames: Turbulent Flame Speed [PDF]

, 2010
Elaine S. Oran, Alexei Y. Poludnenko
openaire   +1 more source

Influence of turbulence on methane-Air flame speed

Tanzania Journal of Engineering and Technology, 1994
Abstract
openaire   +3 more sources

Study on the Deflagration Characteristics of Methane–Air Premixed Gas in Sudden Expansion Pipelines

Energies
This study employs both experimental and numerical simulation methods to systematically investigate the influence of sudden expansion diameter ratios on methane–air premixed flame propagation, explosion overpressure, and the evolution of turbulent ...
Ning Zhou, Zhuohan Shi, Xue Li, Bing Chen, Yiting Liang, Zhaoyu Li, Chunhai Yang, Xuanya Liu, Weiqiu Huang, Xiongjun Yuan   +9 more
doaj   +1 more source

RANS Simulation of Turbulent Diffusive Combustion using Open Foam

Journal of Applied Fluid Mechanics, 2016
Schemes to write the flow equations in discreet form, solution solvers, pre and post data processing utilitiesprovidedbyOpenFoamlibraries, areusedtobuildafinitevolumeexecutableforsimulatinga low speed, turbulent and rate controlled diffusive CH4-Air ...
Luis Felipe Gutiérrez, J. Tamagno, S. A. Elaskar   +2 more
doaj