Experimental and numerical investigation of a single-tree fire

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-02-05 DOI:10.1177/07349041231218967

Gilbert Accary, Joseph Darido, Dominique Morvan, Leo Schneider, Benjamin Betting, Nicolas Frangieh, Sofiane Meradji, Albert Simeoni

引用次数: 0

Abstract

The physics and the dynamics of static fires were studied numerically and experimentally by burning single Douglas fir trees. The mass loss rate was recorded, as well as the radiative heat flux and temperature at different positions. The numerical simulations were carried out using a fully physical CFD code (FireStar3D), and two levels of description were considered: in the first one, the vegetation was represented using a single fuel-type; in the second, four fuel-types were considered. The numerical results were compared to the experimental data for fuel moisture content of 14% and 50%. The results clearly show the advantage of considering several fuel-types to represent the tree; nevertheless, compared to the experiments, faster tree burning dynamics is obtained by simulation. The role played by the ignition process was also analysed numerically, highlighting the sensitivity of the tree burning dynamics to the ignition protocol.

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单树火灾的实验和数值研究

通过燃烧单棵花旗松，对静态火灾的物理和动力学进行了数值和实验研究。记录了质量损失率以及不同位置的辐射热通量和温度。数值模拟使用完全物理的 CFD 代码（FireStar3D）进行，并考虑了两个层次的描述：第一个层次使用单一燃料类型表示植被；第二个层次考虑了四种燃料类型。数值结果与燃料含水量为 14% 和 50% 的实验数据进行了比较。结果清楚地表明，考虑几种燃料类型来表示树木是有优势的；然而，与实验相比，模拟得到的树木燃烧动态更快。此外，还对点火过程所起的作用进行了数值分析，突出了树木燃烧动力学对点火方案的敏感性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.