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Showing 1 to 17 of 17 for “"Flame Spread"”.
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Flame spread through a solid fuel
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1963.
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Decomposition, Ignition and Flame Spread on Furnishing Materials
The general aim of this research is to find an effective and applicable method of prediction of pyrolysis and ignition of certain furnishing materials in a real fire environment.
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Numerical Modeling of Turbulent Combustion and Flame Spread
… numerical modeling of turbulent combustion and flame spread. The developed models include a pyrolysis model for charring and non-charring solid materials, a fast narrow band radiation property evaluation model (FASTNB) and a turbulence model for buoyant flow and flame. In the pyrolysis model, a …
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The effect of physical properties on flame spread behavior for various paper/bagasse composition
… for paper production. However, research on flame spread towards combination paper / natural fiber is still a lack of data. Inspiration from this, the behavior of downward flame spread over paper and bagasse is experimentally investigated. This experiment was conducted by using the specimen …
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A Generalized Model for Wall Flame Heat Flux During Upward Flame Spread on Polymers
A current model accurately predicts flame to surface heat flux during upward flame spread on PMMA based on a single input parameter, the mass loss rate. In this study, the model was generalized to predict the heat flux for a broad range of polymers by adding the heat of combustion as a second input …
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Experimental study on two-dimensional propagating edge flames: cold flow modeling and flame spread rate measurements
… on two-dimensional, planar propagating edge flames. The results were generated using a new apparatus in which a thin stream of gaseous fuel is injected into a low-speed laminar wind tunnel thereby forming a flammable layer along the centerline. The fuel injector consists of aluminum airfoil …
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Development of a new apparatus to measure flame spread through a free stratified fuel/air mixture: numerical modeling and experimental results
<p>While flame spread through uniform fuel-air mixtures has been widely studied in combustion science, there has been relatively little attention given to the study of non-homogenous, or layered, fuel-air mixtures. However, these systems are common occurrences in such cases as terrestrial fuel …
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UTILIZING A HIGH-RESOLUTION CFD-BASED MODEL TO REPLICATE THE BURNING OF A TWO-STORY STRUCTURE IN THE MAUI WILDFIRE
… thin radiation model best recreated the flame spread between adjacent structures and vegetative fuels. Models qualitatively demonstrate flame spread between structures; however, quantitative timing is highly sensitive to uncertainty. Sensitivity analysis suggests that the emissivity of a …
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Modeling full-scale fire test behaviour of polyurethane foams using cone calorimeter data
… using center and edge-ignition locations. Flame spread and heat release rates were compared. For specimens of the same size, center-ignition tests produced flame areas and peak heat release rates which were respectively 10 and 20% larger compared to edge-ignition tests. Average flame spread …
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Modelling of fire spread and the growth of fire in buildings using computational fluid dynamics
… contribute to the development of a model of fire spread over a surface, and to integrate this model with a computational fluid dynamics (CFD) model that is capable of making predictions of the environment associated with full-scale fires in enclosures. The research focuses on the growth and spread …
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Comprehensive Computational Modeling of Hypergolic Propellant Ignition
… as well as the structure of opposed diffusion flame are studied next, followed by the study of opposed liquid jets and the gas layer at the interface. Lastly, effects of transport properties on gas phase kinetics are studied using impinging vapor sheets.</p> <p>In order to mitigate the effects …
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Development of Instrumental and Computational tools for investigation of polymer flammability
… of one scenario to the next, for properties like flame spread and time to flashover. Measurements have been made using all of the thermal analysis and fire test methodologies listed above. Correlations between the test methods have been drawn and the theory relating them derived. Predictive …
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Fluid dynamics of boundary layer combustion
… where counter-rotating vortices force the flame sheet towards the surface, increasing the surface heat flux. This spanwise redistribution of surface heat flux confirmed that streaks can, at least instantaneously, modify important heat transfer properties of the flow. Additionally, the …
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BIOINSPIRED POLYAMIDOAMINES AS INNOVATIVE FLAME RETARDANTS FOR CELLULOSIC FABRICS
… derived from natural a-amino acids as effective flame retardants for cotton fabrics; 2. Study of the polyamidoamine decomposition products upon heating; 3. Phosphorous-sulphur-based polyamidoamines as flame retardants for cotton fabrics; 4. Study of the synergism between a-aminoacid …
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Ανάλυση της απόκρισης σύνθετων πολυμερών υλικών υπό συνθήκες φωτιάς. Εφαρμογή σε αεροπορικές κατασκευές
… “bother” the aeronautics industry are the fire spread inside the cabin, smoke generation and toxicity of the fumes, but these are not handled in the current dissertation. Aircraft structures are designed to withstand various loading scenarios during their operational life. These loading …