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为了提高森林灭火决策和林火管理的效率,直观、科学的林火蔓延模拟成了有用的辅助工具。集成了FARSITE的林火蔓延模拟引擎和基于粒子系统的林火三维可视化方法,研发了林火蔓延三维可视化模拟软件原型系统。系统实现了在逼真的三维虚拟环境中,模拟不同可燃物、地形、气象等因子影响下的林火蔓延过程,预测林火行为,估算过火面积和林火边界。用户可以交互式输入着火点的空间位置、林火影响因子数据,交互式圈定隔离带,模拟、分析不同情境下的林火演化过程。这种形象、动态地表达林火的蔓延过程,可以激发人的直感思维,有利于人们做出合理的灭火方案。
In order to improve the efficiency of forest fire fighting decisions and forest fire management, an intuitive and scientific simulation of forest fire spread has become a useful aid. Integration of FARSITE forest fire spread simulation engine and particle-based forest fire three-dimensional visualization method, the development of forest fire spread three-dimensional visual simulation software prototype system. The system realizes the process of forest fire spread under the influence of different combustibles, topography and meteorological factors in the realistic three-dimensional virtual environment, predicts the forest fire behavior, estimates the over-fire area and the forest fire boundary. The user can interactively input the spatial location of the fire point, the forest fire influence factor data, interactively delineate the isolation zone, and simulate and analyze the forest fire evolution process in different situations. This image, dynamic expression of the spread of forest fire can stimulate people’s intuitive thinking, is conducive to people to make a reasonable fire-fighting plan.