Results 211 to 220 of about 19,086 (254)

On numerical simulation of combustion in a diffusion flare

Energy Systems, 2022
The study is devoted to mathematical models of mass transfer during diffusion combustion of gaseous fuel. A numerical approach is presented that makes it possible to estimate the effect of combustion conditions on the length of a direct-flow diffusion flame.
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On Combustion Waves Driven by Diffusion of Pressure

Combustion Science and Technology, 1997
In gas filled porous media the local elevation of pressure slowly diffuses to the adjacent layers of gas inducing the rise in temperature there. In the case of explosive gases this mechanism may lead to the formation of a self-sustaining combustion wave propagating at a constant speed.
I. BRAILOVSKY, V. GOLDSHTEIN, I. SHREIBER, G. SIVASHINSKY   +3 more
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Mechanisms of countergradient diffusion in turbulent combustion

Physics of Fluids, 2009
The mechanism of countergradient diffusion of chemical species and heat in turbulent combustion is sought with the aid of the results by the two-scale direct-interaction approximation. The deviation of the Reynolds stress and the turbulent fluxes of chemical species, heat, and mass from their gradient-diffusion representations is related to the ...
Yoshizawa, Akira, Fujiwara, Hitoshi, Abe, Hiroyuki, Matsuo, Yuichi   +3 more
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Diffusion combustion of liquids with a free surface

Combustion, Explosion and Shock Waves, 1983
This article develops an approximate (quasi-one-dimensional) approach to describe the combustion of liquids with a free surface. It is assumed that the distributions of characteristic quantities in the internal and external regions of the diffusion flame formed by combustion of the vapor jet are uniform. The combustion of liquids with a free surface is
S. N. Mil'kov, G. S. Sukhov, L. P. Yarin
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Taylor-diffusion-controlled combustion in ducts

Combustion Theory and Modelling, 2020
An analysis is presented for the Burke–Schumann flame established when a fuel tank discharges with mean velocity U along a circular duct of radius a filled initially with air. Attention is focused on effects of interactions of shear with transverse diffusion resulting in enhanced longitudinal dispersion. The analysis accounts for preferential-diffusion
Amable Liñán, Prabakaran Rajamanickam, Adam D. Weiss, Antonio L. Sánchez   +3 more
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Diffusion combustion of a liquid propellant film

Combustion, Explosion and Shock Waves, 1988
Let us consider the combustion of a liquid propellant film moving under the action of gravity along a plane vertical plate. At a certain distance from the free surface a diffusion plume is formed on whose front the burnup of liquid vapors occurs in a gaseous oxidizer (Fig. la).
G. S. Sukhov, S. V. Fishman, L. P. Yarin
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Combustion of Kerosene in Counterflow Diffusion Flames

Journal of Propulsion and Power, 2001
Numerical modeling has become an essential tool in combustion research as a means of predicting combustion performance and pollutant formation, e.g., NO x and soot. In many combustion models the combustion of a commercial fuel such as kerosene has been represented by single-step empirical expressions. To predict kinetically controlled phenomena, a more
P. M. Patterson, A. G. Kyne, M. Pourkashanian, A. Williams, C. W. Wilson   +4 more
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Combustion Roar of Turbulent Diffusion Flames

Journal of Engineering for Power, 1970
Pertinent literature is reviewed and experimental data on the combustion roar of turbulent, natural-gas, diffusion flames are presented. These data were obtained on two experimental burner rigs, one that consisted of two impinging fuel jets, and one that consisted of eight almost impinging fuel jets.
R. D. Giammar, A. A. Putnam
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A STUDY ON THE PLASMA JET DIFFUSIVE COMBUSTION

SAE Technical Paper Series, 2001
<div class="htmlview paragraph">A new concept of combustion which is using the characteristic of plasma jet ignition, that is the plasma jet diffusive combustion is proposed. The constant volume vessel is used for the experiment, and methanol is charged in the cavity of plasma jet injector and the air at room temperature and atmospheric pressure ...
Masaya Ogawa, Hisatoshi Sasaki, Koji Yoshida, Hideo Shoji, Hidenori Tanaka   +4 more
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Magnetic promotion of combustion in diffusion flames

Physica B: Condensed Matter, 1996
Abstract When a fuel gas flowed in the direction of a decreasing field strength, inhomogeneous magnetic fields were found to promote combustion in diffusion flames. On the application of a magnetic field gradient (H(dH/dy) = 35 T2/m), the flame temperature increased by about 120° and the flame became shorter and more brilliant.
Nobuko I. Wakayama, Masaaki Sugie
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