One-Dimensional Mathematical Models to Simulate Deciduous Tree Ignition

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Abstract

The results of numerical simulation of heating a coniferous tree (pine) by cloud-to-ground lightning discharge are presented. The problem is solved in a one-dimensional formulation in a cylindrical coordinate system. A four-layer structure of the coniferous trunk is considered taking into account the core, subcortical layer, bark and surface water layer. A parametric study of the effect of current-voltage characteristics typical of negative and positive cloud-to-ground lightning discharges on the process of heating the trunk wood has been carried out. The conditions for the ignition of a tree trunk in a typical range of variation of the parameters of the impact of the discharge are established.
模拟落叶树点火的一维数学模型
本文介绍了云对地雷电放电加热针叶树(松)的数值模拟结果。该问题在柱面坐标系下用一维公式求解。考虑到针叶树干的核心、皮质下层、树皮和表面水层,认为树干具有四层结构。对典型的负极和正极云对地闪电放电的电流-电压特性对树干木材加热过程的影响进行了参数化研究。在典型的放电影响参数变化范围内,建立了树干点火的条件。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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