Simulation of Coupled Fire/Atmosphere Interaction with the MesoNH-ForeFire Models
Simulation of Coupled Fire/Atmosphere Interaction with the MesoNH-ForeFire Models
复制标题
使用 MesoNH-ForeFire 模型模拟火/大气耦合相互作用
DOI：
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复制
发表时间：
2010
期刊：
影响因子：
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通讯作者：
C. Mari
中科院分区：
文献类型：
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作者：
J. Filippi;F. Bosseur;Xavier Pialat;P. Santoni;S. Strada;C. Mari
模拟森林火灾与大气过程之间的相互作用需要高度详细且计算密集型的模型。由于要模拟大量燃料的数量和多样性，在荒地火灾中处理此类模拟禁止使用基于燃烧的模型。在本文中，我们提出了一种将火灾区域模拟器与中尺度天气数值模型相结合的方法，以模拟局部火灾/大气相互作用。分析了五个理想化的模拟案例，显示了地形和火锋诱发风之间的强烈相互作用，这种相互作用在非耦合模拟中无法模拟。应用于真实案例场景的相同方法也显示出与观察到的案例在质量上可比的结果。所有这些结果都是在双处理器计算机上经过不到一天的计算而获得的，为目前仅限于五十米的网格分辨率留下了改进的空间。
Simulating interaction between forest fire and atmospheric processes requires a highly detailed and computationally intensive model. Processing this type of simulations in wildland fires forbids combustion-based models due to the large amount of fuels to be simulated in terms of quantity and diversity. In this paper, we propose an approach that couples a fire area simulator to a mesoscale weather numerical model in order to simulate local fire/atmosphere interaction. Five idealized simulation cases are analysed showing strong interaction between topography and the fire front induced wind, interactions that could not be simulated in noncoupled simulations. The same approach applied to a real-case scenario also shows results that are qualitatively comparable to the observed case. All these results were obtained in less than a day of calculation on a dual processor computer, leaving room for improvement in grid resolution that is currently limited to fifty meter.