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Flame stabilization with a tubular flame
Proceedings of the Combustion Institute, 2005Abstract A new technique to stabilize a flame in a high-velocity stream with use of a tubular flame has been proposed. To elucidate the validity of this technique, an experiment has been conducted by mounting a tubular flame burner on the nozzle. Flame stability limits and temperature distributions around the burner port have been determined, and ...
Daisuke Shimokuri, Satoru Ishizuka
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The Physics of Fluids, 1961
Markstein theory of stability of laminar flames is shown to be supported by experimental results on oscillated laminar propane-air flames. Disturbances in appropriate wavelength ranges grow and distort while for other ranges disturbances are damped. These facts imply important restrictions on the nature of a turbulent flame and its interaction with the
Petersen, Russell E., Emmons, Howard W.
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Markstein theory of stability of laminar flames is shown to be supported by experimental results on oscillated laminar propane-air flames. Disturbances in appropriate wavelength ranges grow and distort while for other ranges disturbances are damped. These facts imply important restrictions on the nature of a turbulent flame and its interaction with the
Petersen, Russell E., Emmons, Howard W.
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On the Stability of Plane and Curved Flames
SIAM Journal on Applied Mathematics, 1984The authors derived a model, in which both thermal expansion and flame structure are accounted for. The model describes the dynamics of flame fronts including their stability. The stability of the plane and curved flames are discussed. In particular the effect of flame stretch, thermal expansion, Lewis number and Prandtl number, on stability is ...
Matalon, M., Matkowsky, B. J.
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Nonlinear equation for curved nonstationary flames and flame stability
Physical Review E, 1999A time-dependent nonlinear equation for a nonstationary curved flame front of an arbitrary expansion coefficient is derived under the assumptions of a small but finite flame thickness and weak nonlinearity. On the basis of the derived equation, stability of two-dimensional curved stationary flames propagating in tubes with ideally adiabatic and slip ...
V V, Bychkov +2 more
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On the stability of stretched flames
Combustion Theory and Modelling, 1997It is shown that the well known difficulty concerning the unconditional stability of a planar flame sustained in a stagnation-point flow is due to the infinite aspect length scale of the system. In finite geometries occurring in numerical and laboratory experiments the flame may well become unstable provided the flow-induced stretch is weak enough.
Y. Kortsarts +3 more
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The Influence of Premixed Combustion Flame Stabilizer Geometry on Flame Stability and Emissions
Journal of Engineering for Power, 1981Premixed combustion systems for gas turbines offer the possibility of low-pollution, high-combustion efficiency and good temperature distribution. They form a basis by which other well-mixed combustion systems may be assessed. The ultimate objective of this work is the development of nonpremixed rapid mixing combustion systems.
N. A. Al Dabbagh, G. E. Andrews
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Stoichiometric flames and their stability
Combustion and Flame, 1995We consider a flame in a stoichiometric combustible mixture of two reactants, A and B, having different diffusivities. We employ a thin reaction zone approximation and assume that the reaction ceases when the concentrations and temperature approach their thermodynamic equilibrium values.
A.P. Aldushin +2 more
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1992
M. Sichel initiated the discussion by observing that at least in gases, steady one-dimensional detonations are seldom observed. Invariably, real detonations have a cellular structure.
A. Kapila, M. Matalon
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M. Sichel initiated the discussion by observing that at least in gases, steady one-dimensional detonations are seldom observed. Invariably, real detonations have a cellular structure.
A. Kapila, M. Matalon
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The Structure and Stability of Flame Balls: A Near-Equidiffusional Flame Analysis
SIAM Journal on Applied Mathematics, 1991The energy and species conservation equations are considered in spherical geometry with Arrhenius kinetics. The model is thermal-diffusional (i.e. no fluid mechanical effects are considered). Asymptotic analysis is carried out and stability analysis of the two solutions demonstrated is carried out.
Lee, C. J., Buckmaster, J.
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Monitoring Oxy-Coal Flame Stability
2018 IEEE 27th International Symposium on Industrial Electronics (ISIE), 2018This paper presents a novel approach to monitoring the stability of oxy-coal flames. Oxy-coal combustion has the potential to generate high concentrations of carbon dioxide in the exhaust gas stream. This could increase the efficiency of the removal of carbon dioxide emissions from a coal fired utility boiler.
Palaniappan Valliappan +3 more
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