摘要
本文运用分形理论对林火蔓延进行了研究，以分形曲线的自相似性为基础，结合火场参差不齐的边界，分析了在平地均匀可燃物床情况下，不同风速、风向的分形关系，从而建立起林火蔓延的分形模型。用ｃｏｃｈ雪花曲线导出了火场蔓延的面积公式并用实例进行了计算和误差的比较分析。
In this article,fractal theory is applied to further study the spread of forest fires,the fractal relations under variable wind velocities,wind directions, and level and isotropic fuel beds are analysed A fractal model is presented on the basis of self-similarity of ractal curve and the fea-ture of the uneven boundary of fire field.A area formula of fire field is dedused from 1.2618 coch cu rve, It turns out that average errors of relative values,are small.the wider a fire field is,the smaller a relative error will be in calculation. the medel is sufficiently simple,qulte floxi-ble,rather accurate and Convenient to deal with forest fire spread in the initial
出处
《火灾科学》
CSCD
1994年第1期1-8,共8页
Fire Safety Science
基金
国家自然科学基金的支持
