林火蔓延模型的改进及可视化验证  

Improvement and Visual Verification of Forest Fire Spread Model

作　　者：唐勇[1,2] 张晓碧 刘浩阳 郭慧玲 TANG Yong;ZHANG Xiao-bi;LIU Hao-yang;GUO Hui-ling(The College of Information Science and Engineering,Yanshan University,Qinhuangdao 066004,China;The Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province,Qinhuangdao 066004,China;Department of Information Engineering,Hebei University of Environmental Engineering,Qinhuangdao 066102,China)

机构地区：[1]燕山大学信息科学与工程学院,河北秦皇岛066004 [2]河北省计算机虚拟技术与系统集成重点实验室,河北秦皇岛066004 [3]河北环境工程学院信息工程系,河北秦皇岛066102

出　　处：《小型微型计算机系统》2020年第4期893-896,共4页Journal of Chinese Computer Systems

基　　金：河北省自然科学基金项目(F2018203060)资助。

摘　　要：针对林火蔓延模型绘制效果差的问题,本文提出一种改进的林火蔓延模型,实现不同环境因子对林火蔓延影响的可视化验证.首先,通过温度场随时间的变化函数进一步修正林火蔓延的初始速度,提高火焰扩散的随机性,增强了火焰模拟的真实性;其次,为了解决火焰模拟存在的细节丢失问题,引入脉动风场修正风速调整系数增加火焰的细节;然后,为了揭示火焰蔓延和环境因子的关系,分析环境因子与林火蔓延模型的关系,实现改进林火蔓延模型的可视化;最后,设计多组不同地形和环境中火焰蔓延的实验实例,实验表明,改进的林火蔓延模型能够绘制不同环境因子作用下的林火蔓延场景,在增加火焰蔓延细节的同时能够保证实时.Aiming at the problem of poor effect of forest fire spread model,this paper proposes an improved forest fire spread model to realize the visual verification of the influence of different environmental factors on forest fire spread.Firstly,the initial velocity of the forest fire spread is further corrected by the change function of the temperature field with time,the randomness of the flame spread is improved,and the authenticity of the flame simulation is enhanced.Secondly,in order to solve the loss of detail in the flame simulation,the pulsating wind field is introduced.Correct the wind speed adjustment coefficient to increase the details of the flame;then,in order to reveal the relationship between flame spread and environmental factors,analyze the relationship between environmental factors and the forest fire spread model,and realize the visualization of the improved forest fire spread model;finally,design multiple sets of different terrains and environments.In the experimental example of the flame spread,the experiment shows that the improved forest fire spread model can draw the forest fire spread scene under the action of different environmental factors,It can increase the detail of flame spread and ensure real-time.

关 键 词：林火蔓延模型 环境因子 可视化 火焰模拟 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]