森林火场区上升气流的观测与研究

Research and Observation of Buoyant Flow Associated With Forest Fire

最近几年，森林火灾与大气环境的相互作用引起林火研究者和有关科学家兴趣和重视。本文介绍森林火场区流场的观测与研究，分析表明，最大上升气流Ｗ与林火强度Ｉ的三分之一次方成比例，与实验大体相符。在较大面积火区上方通常是对流单位，有上升与下沉气流交替出现。

In recent years,the impact of forest fire on the atmospheric environment has provoked a great deal of interest of forest fire researchers and other scientists, In this paper, the results of observation and test of upstream flow in forest fires were presented.The relationship between upstream velocity (W)and fire intensity (I ) was found to be, Which was in a good agreement with the experiments,In addition,it was ob-served that upstream and down stream flows in a convective cell appeared aIternativelyabove the fires with larger area and intensity.