Response of Free-Burning Fires to Nonsteady Wind
Response of Free-Burning Fires to Nonsteady Wind
复制标题
自由燃烧火灾对不稳定风的响应
DOI：
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
F. Albini
中科院分区：
文献类型：
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作者：
F. Albini
摘要本文建立了一个在非定常风影响下自由燃烧的火灾强度和蔓延速率随时间变化的唯象模型。该模型是线性化的近似和显式的解决方案推导出的扩展率和强度的振幅响应作为风速变化的频率的函数。典型的荒地燃料的文体描述用于生成示例。这些燃料的预测响应直观上令人满意。该模型预测的火灾行为的唯一直接可观察的特征是，随着风速的低频变化（<0.05 Hz），火灾交替进行和暂停时，烟雾滚滚的周期性。
Abstract A speculative, phenomenological model is formulated for the time-varying intensity and spread rate of a free-burning fire under the influence of nonsteady wind. The model is linearized by approximations and explicit solutions derived for the amplitude response of spread rate and intensity as a function of the frequency of windspeed variations. Stylistic descriptions of typical wildland fuels are used to generate examples. The responses predicted for these fuels are intuitively satisfactory. The only directly observable feature of fire behavior predicted by the model is an inferred periodicity for the issuance of billows of smoke as the fire alternately races and pauses in response to the low-frequency variations (<0.05 Hz) in windspeed.