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Assessment of Fire Heat Release Rate for Train Fires

机译:火车火灾的火热释放率评估

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This paper provides a discussion on current methodologies used to predict train fire heat release rates by discussing how the various fundamental combustion thermophysical properties vary as a function of temperature and equivalence ratio. This paper illustrates that the thermophysical properties vary but are being assumed constant, and it identifies that there is a need to reconsider how to properly use these properties and to develop an extensive database of fundamental properties in order to improve the quality of the answers. In addition, this paper points out that combustion must be taken into account when determining the fire heat release rate and that there is no universal answer, so each case needs to be evaluated on its own merits. Knowing answers on a per-unit-area basis is not enough to scale off to a full three-dimensional domain.
机译:本文通过讨论各种基本燃烧热物理性质如何随温度和当量比变化而变化,从而对当前用于预测火车着火释放率的方法进行了讨论。本文说明了热物理性质各不相同,但被假定为常数,并且指出需要重新考虑如何正确使用这些性质,并开发一个广泛的基本性质数据库,以提高答案的质量。另外,本文指出,在确定火的放热率时必须考虑燃烧,并且没有通用的答案,因此每种情况都需要根据自身情况进行评估。仅按单位面积知道答案不足以扩展到完整的三维域。

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