Mathematical Computing of Coniferous Tree Ignition by the Cloud-to-Ground Lightning Discharge using Joule-Lenz's Law

2017 ◽  
Vol 7 (3) ◽  
pp. 1337
Author(s):  
Nikolay V. Baranovskiy ◽  
Geniy V. Kuznetsov ◽  
Tatiana N. Nemova
Keyword(s):  
Lightning Discharge ◽  
Mathematical Formulation ◽  
Thunderstorm Activity ◽  
Natural Phenomenon ◽  
Coniferous Tree ◽  
Tree Trunk ◽  
Supply Networks ◽  
Cylindrical Coordinate ◽  
Current Passage ◽  
Cloud To Ground Lightning

The natural phenomenon of thunderstorm activity is one of many causes of a forest fire. Thunderstorms cause especially intensive fire danger situations within remote areas and highlands. As a rule, a cloud-to-ground lightning discharge is the fire source. The present study is based on the research results of electrical overloads in supply networks. Physical and mathematical formulation and numerical solution for the problem of a coniferous tree (pine) ignited by a cloud-to-ground lightning discharge are presented. The problem is considered in a cylindrical coordinate system in two-dimensional formulation. The features of current passage and heat transfer taking into account the reactive wood localization are investigated. The Joule-Lenz’s law is used to calculate heat production in a tree trunk. Parametric analysis has been conducted and tree trunk ignition conditions have been determined in a typical range for the influencing parameters of negative and positive discharges.

Mathematical Modelling of Deciduous Tree Ignition by Ground Lightning Discharge Taking into Account Localization of Reactive Wood

2011 ◽  
Vol 6 (4) ◽  
pp. 95-106
Author(s):  
Nikolay Baranovskiy ◽  
Geniy Kuznetsov
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Mathematical Modelling ◽  
Lightning Discharge ◽  
Deciduous Tree ◽  
Tree Trunk ◽  
Mathematical Statement ◽  
Cylindrical System ◽  
Typical Range

Physical and mathematical statement and results of the numerical simulation of a problem about deciduous tree (birch) ignition by ground lightning discharge are presented. The problem is considered in flat statement in cylindrical system of coordinates. Heat transfer features taking into account localization of reactive wood are considered. The parametrical analysis is carried out and conditions of tree trunk ignition in a typical range of parameters of influence of positive discharges are obtained

The channel radius and energy of cloud-to-ground lightning discharge plasma with multiple return strokes

2014 ◽  
Vol 21 (3) ◽  
pp. 033503 ◽  
Author(s):  
Xuejuan Wang ◽  
Ping Yuan ◽  
Jianyong Cen ◽  
Jianguo Liu ◽  
Yajun Li
Keyword(s):  
Discharge Plasma ◽  
Lightning Discharge ◽  
Channel Radius ◽  
Cloud To Ground Lightning

scholarly journals Forecast of Thunderstorm Cloud Trend Based on Monitoring Data of Thunder Mobile Positioning System

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Mingfa Wu ◽  
Chongjing Yang ◽  
Xiangke Liu
Keyword(s):  
Lightning Discharge ◽  
Monitoring Data ◽  
Practical Significance ◽  
Lightning Strike ◽  
Natural Phenomenon ◽  
Main Task ◽  
Positioning System ◽  
Lightning Strikes ◽  
Thunderstorm Cloud ◽  
Mobile Positioning

As a natural phenomenon, thunder and lightning have a major impact on human production and life. As an important part of lightning protection technology, the main task of the lightning mobile positioning system is to detect and determine the location of lightning and, at the same time, provide more accurate lightning discharge parameters for lightning research. It is a new technology that serves the entire society and is in urgent need of development. This paper aims to study the trend prediction of thunderstorm cloud based on the monitoring data of the thunder and lightning mobile positioning system. In this thesis, the inverse distance-weighted interpolation method can be used to determine the lightning area and the principle of lightning monitoring and positioning, and the classification of lightning and the practical significance of lightning mobile positioning system monitoring are also studied. Finally, the Hurst index of this paper can reveal the trend elements in the time series well through the experiment, so as to judge the lightning strikes. At the same time, it also introduces everyone’s satisfaction survey on the lightning mobile positioning system. The results of this paper show that the lightning mobile positioning system has been widely used in our country’s meteorological monitoring stations, and it plays a very important role in our national defense lightning strikes and effectively realizes the lightning strike prediction in the monitoring process, which can better enable the competent department to take timely and accurate measures to prevent lightning strikes. Experimental analysis shows that the accuracy of the lightning mobile positioning system has reached 92%, and the practicability has reached 88%.

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