EXPERIMENTAL STUDY OF MASS BURNING RATE OF LIQUID POOL FIRES UNDER DYNAMIC PRESSURE IN AN ALTITUDE CHAMBER

被引：0

作者：

Tao, Zhenxiang ^{[1
]}

Yang, Rui ^{[1
]}

Li, Cong ^{[1
]}

Yao, Yina ^{[1
]}

Wang, Wei ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Engn Phys, Inst Publ Safety Res, Beijing 100084, Peoples R China

来源：

PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2017 VOL 8 | 2018年

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

dynamic pressure; mass burning rate; pool fires; burning model; n-heptane; N-HEPTANE; COMBUSTION CHARACTERISTICS;

D O I：

暂无

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

To study the influence of dynamic pressure on the liquid combustion characteristics, two kind sizes of pool fires were studied under varied pressure rates, namely 100Pa/s, 200Pa/s, 300Pa/s from 90kPa to 38kPa in an altitude chamber which size is 2m*3m*4.65m. Combustion characteristics of n-heptane pool fires, such as mass burning rate, flame temperature, chamber pressure were measured in this research. Experiment results show that the mass burning rate of 20cm pool fires, decreases when the ambient pressure reduces, and the variation trend become more sharply when the dynamic pressure rate is increased, while 30cm pool fires at the beginning of the combustion stage almost remain constant, this is because fire heat feedback have a great influence on it. The results also show that compared to the radiation model, pressure model could be linear fitting better in a double logarithm coordinate, and oil pool fires under 300Pa/s of 20cm, 100Pa/s of 30cm the value of a obtained by the fitted curves were more closer to fixed pressure ones.

引用

页数：7

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