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Functionalized lignin by grafting phosphorus-nitrogen improves the thermal stability and flame retardancy of polypropylene [PDF]
Polymer Degradation and Stability, 2012 Improving the thermal stability and flame retardancy of polymers remains a great challenge. Although lignin has been used as a flame retardant for polymers, its flame retardancy effect is usually limited.
Youming Yu, Shenyuan Fu, Pingan Song
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Flame Stabilization Mechanisms in Lifted Flames
Flow, Turbulence and Combustion, 2011zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Navarro-Martinez, Salvador +1 more
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On the Stability of Nonadiabatic Flames
SIAM Journal on Applied Mathematics, 1981A linear stability analysis is carried out for the cellular instability of a nonadiabatic downward-propagating premixed flame. It is shown that if the molecular weight of the deficient reactant is sufficiently small, then an increase in heat loss may lead to destabilization of an adiabatically stable flame (i.e., a flame which is stable in the absence ...
Sivashinsky, G. I., Matkowsky, B. J.
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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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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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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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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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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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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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