摘要
考虑山坡的斜度、风速、烟气的流动方向与水平面夹角变化等因素 ,计算了烟气所能蔓延到的区域。同时 ,计算了烟气羽流各截面的质量流量和热流密度。此外 ,还计算了林木表面与烟气换热的热流密度和总换热量。在此基础上分析了山坡斜度和风速对烟气运动的影响 ,从而对林火的蔓延发展进行分析和预测。
The region that the smoke can spread was calculated considered multiple factors such as the slope of the hill,the wind velocity,the change of the angle between the smoke and the lever and so on.At the same time,the mass flow rate and the heat flux density of each cross section of smoke flow were calculated as well.In addition,the total quantity and the density of heat transfer between the smoke and the surface of the different woods.Based on these,the influence of the slope of the hill and the wind velocity to the smoke motion was analyzed,and the spread of the forest fire was forecasted as well.
出处
《林业科技》
北大核心
2002年第6期25-29,共5页
Forestry Science & Technology
基金
国家自然科学基金资助项目 (30 0 70 6 2 9)
