Results 11 to 20 of about 32,275 (199)

Turbulent burning velocity measurements: Extended to extreme levels of turbulence [PDF]

open access: yesProceedings of the Combustion Institute, 2017
Abstract Previous measurements of turbulent burning velocity ( S T ) have been reported by Gulder and colleagues for intense levels of turbulence, defined to be u ’⁄ S L values between 12 and 24, and normalized integral scales ( L x ⁄ δ L ) up to 46.
Timothy M. Wabel   +2 more
openaire   +3 more sources

The turbulent burning velocity of iso-octane/air mixtures [PDF]

open access: yesCombustion and Flame, 2012
Turbulent burning velocities of iso-octane air mixtures have been measured for expanding flame kernels within a turbulent combustion bomb. High speed schlieren images were used to derive turbulent burning velocity. Turbulent velocity measurements were made at u’ = 0.5, 1.0, 2.0, 4.0, 6.0 m/s, equivalence ratios of 0.8, 1.0, 1.2, 1.4 and pressures of P =
Lawes, M.   +3 more
openaire   +4 more sources

Modelling of turbulent hydrogen-blended premixed flames using algebraic flame surface wrinkling closure for the Lewis numbers and mean local burning velocity

open access: yesAlexandria Engineering Journal, 2022
Hydrogen-blended fuel is of fundamental interest due to difficulties in modelling and its practical significance for the development of high-performance hydrogen combustion devices and safety technologies for the prediction and prevention of fire or ...
Siva PR Muppala
doaj   +1 more source

Flow field and local burning velocity affected by stretch in swirl flow of turbulent premixed flames

open access: yesJournal of Thermal Science and Technology, 2022
In this study, we have investigated turbulent premixed flames affected by local stretch in a swirl flow, measured by the simultaneous OH-PLIF/SPIV system. Evaluating the transient of burning velocity and stretch rate, the flow and the flame dynamics in a
Kazuhiro YAMAMOTO   +2 more
doaj   +1 more source

Turbulent burning velocity in combustion chamber of SI engine fueled with compressed biogas

open access: yesVietnam Journal of Mechanics, 2015
Turbulent burning velocity is the most important parameter in analyzing pre-mixed combustion simulation of spark ignition engines. It depends on the laminar burning velocity and turbulence intensity in the combustion chamber.
Bui Van Ga   +2 more
doaj   +1 more source

Numerical Study on the Effects of Turbulence Scale on Spherically Propagating Hydrogen Flames within Multiple Flame Radii

open access: yesInternational Journal of Automotive Engineering, 2019
Three-dimensional direct numerical simulations of spherically propagating premixed turbulent hydrogen flames were carried out to clarify the influence of turbulence scale on propagating hydrogen/air flame.
Hazim Shehab   +3 more
doaj   +1 more source

Transient combustion responses of homogeneous propellants to acoustic oscillations in axisymmetric rocket motors [PDF]

open access: yes, 1997
A numerical analysis of unsteady motions in solid rocket motors has been conducted. The formulation considers a 2-D axisymmetric combustion chamber and a choke nozzle, and treats the complete conservation equations accounting for turbulence closure ...
Culick, F. E. C., Roh, T. S.
core   +1 more source

Fluid-mechanical structure of methane-air and propane-air turbulent premixed flames

open access: yesNihon Kikai Gakkai ronbunshu, 2015
The flow fields of lean and rich propane-air and methane-air turbulent premixed flames of the identical conditions of laminar burning velocity and characteristic of turbulence have been closely examined by using a three-color six-beam LDV system.
Yasuko YOSHIDA   +2 more
doaj   +1 more source

IMPACT OF THE NOZZLE ANGLE, DISTANCE BETWEEN BURNERS, AND N2 ON BURNING VELOCITY OF THE DIFFUSION COUNTER FLAMES

open access: yesJournal of Engineering and Sustainable Development, 2020
The achievement of precise measurements on the laminar diffusion flames plays a big role in the process of realizing a wide flames range. Despite most of fuel is likely burnt in the turbulent combustion, there is still data requirement for the data on ...
Salwa Tariq Omar   +2 more
doaj   +1 more source

The Thermonuclear Explosion Of Chandrasekhar Mass White Dwarfs [PDF]

open access: yes, 1996
The flame born in the deep interior of a white dwarf that becomes a Type Ia supernova is subject to several instabilities. We briefly review these instabilities and the corresponding flame acceleration. We discuss the conditions necessary for each of the
Blinnikov S. I.   +17 more
core   +3 more sources

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