TRANSPORT OF FIREBRANDS BY LINE THERMALS
TRANSPORT OF FIREBRANDS BY LINE THERMALS
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DOI：
10.1080/00102208308923662
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发表时间：
1983-01-01
影响因子：
1.9
通讯作者：
ALBINI, FA
中科院分区：
文献类型：
--
作者：
ALBINI, FA
本文模拟了非层结大气中强线热波的运动，以估计其抬升火焰粒子的能力。研究发现，一个可行的火把的最大高度大致成正比的热强度的平方根。假设输运的热量嵌入风场中，计算了两个风速剖面随高度变化的从原点到自由下降开始点的水平距离。这种顺风漂移距离被证明是显着的，风速剖面敏感。
The motion of a strong line thermal in an unstratified atmosphere is modeled to estimate a bound for its capability to lift firebrand particles. It is found that the maximum height of a viable firebrand is roughly proportional to the square root of thermal strength. The horizontal distance traveled from the point of origin to the point where free descent begins is calculated for two wind-speed profiles with height, assuming the transporting thermal to be embedded in the windfield. This downwind drift distance is shown to be both significant and sensitive to the windspeed profile.