A compartment burning rate algorithm for a zone model

doi:10.1016/j.firesaf.2015.11.005

2016-01-01

PRE

Tensei Mizukami *

Y. Utiskul

James G. Quintiere

DOI：10.1016/j.firesaf.2015.11.005

原文链接

原文求助

摘要

En 中文

A model is presented that dynamically predicts the mass loss rate of fuel in a compartment as a function of ventilation, thermal feedback, fuel type and scale. Without a loss of generality, a floor-based fuel is considered. The effect of ventilation is included in the model through the ambient oxygen concentration in the ambient surrounding the fuel at the floor. A mixing model associated with the inlet airflow at the vent is developed to determine this oxygen concentration. An extinction criterion for the flame is based on a critical flame temperature for a diffusion flame associated with the ambient conditions surrounding the flame at the floor. The model is executed in BRI2002, a zone model, capable of computing species and thermal conditions in the upper and lower compartment gas layers. Computations show good agreement with small-scale compartment data for heptane pool fires. The results can accurately portray many regimes of burning including extinction, combustion oscillations, reduction in the flaming area, and quasi steady burning. (C) 2015 Elsevier Ltd. All rights reserved.

Keyword:

Compartment fire

Experiments

Modeling

Zone model

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期刊

Fire Safety Journal

IF:

3.3

论文数:

3.3K

被引数:

9.6K

机构

University System of Maryland

学者数:

6.5W

论文数: 5.6W

被引数: 113

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