One Dimensional Modeling of Jet Diffusion Flame

Título del documento: One Dimensional Modeling of Jet Diffusion Flame
Revista: Journal of applied research and technology
Base de datos: PERIÓDICA
Número de sistema: 000427630
ISSN: 1665-6423
Autores: 1
Instituciones: 1Birla Institute Of Technology And Science, Department of Chemical Engineering, Hyderabad, Andhra Pradesh. India
2Central Building Research Institute, Fire Research Laboratory, Roorkee, Uttarakhand. India
3Indian School of Mines, Department of Chemical Engineering, Dhanbad, Jharkhand. India
4National Institute of Technology, Department of Chemical Engineering, Bhopal, Madhya Pradesh. India
Periodo: Ago
Volumen: 16
Número: 4
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés This paper reports on the determination of the flame height of a flare system using theoretical approach based on the laws of conservation of mass, momentum and energy. The set of ordinary differential equations at steady state conditions are solved numerically by fourth order Runge-Kutta method. The extent of reaction between the fuel and the entrained air has been studied by introducing the reaction mixing efficiency parameter, as the reaction rate is fixed by local entrainment rate. The reaction mixing efficiency parameter is a key measure to determine the height of the flame and its variation with the source velocity is limited by the flame width and the maximum vertical flame velocity at the tip of the flaming region. The variation of different parameters as vertical flame velocity, flame geometry and flame temperature with flame height are shown in plots. It is found that the flame geometry undergoes an initial necking up to a certain height, followed by an increase in its spread thereafter. The flame geometry and the flame dynamics depend exclusively on the burner design and the stack exit velocity. The flame height to burner diameter ratio of the jet diffusion flame is found to vary linearly with Froude number with a constant slope in the logarithmic plot
Disciplinas: Ingeniería
Palabras clave: Ingeniería química,
Flamas de difusión,
Sistemas de ventilación,
Eficiencia de mezclado de reacción,
Altura de flama
Keyword: Chemical engineering,
Diffusion flames,
Flare systems,
Reaction mixing efficiency,
Flame height
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