High temperature wood particles formation caused by the cloud-to-ground lightning discharge through the coniferous tree trunk; Far East Journal of Mathematical Sciences (FJMS); Vol. 102, № 5

High temperature wood particles formation caused by the cloud-to-ground lightning discharge through the coniferous tree trunk; Far East Journal of Mathematical Sciences (FJMS); Vol. 102, № 5

Podrobná bibliografie
Parent link:Far East Journal of Mathematical Sciences (FJMS)
Vol. 102, № 5.— 2017.— [P. 1033-1044]
Hlavní autor: Baranovskiy N. V. Nikolay Viktorovich
Korporativní autor: Национальный исследовательский Томский политехнический университет (ТПУ) Энергетический институт (ЭНИН) Кафедра теоретической и промышленной теплотехники (ТПТ)
Další autoři: Kuznetsov G. V. Geny Vladimirovich, Nemova T. N. Tatjyana Nikolaevna
Shrnutí:Title screen
Storm activity is one of the factors in forest fire occurrence in various regions. Such fires are characterized by large areas of burned forests with a relatively small proportion of fires caused by cloud-to-ground lightning in their total number. In the summer of 2016, we conducted field observations of the thunderstorm activity in the territory of the Timiryazevskiy forestry in the Tomsk region using the global World Wide Lightning Location Network data. Thermophysical model of heating a coniferous tree wood trunk due to the electrical current of a cloud-to-ground lightning discharge is considered in the article. The problem is solved for a cylinder, which simulates a tree trunk. We consider a certain cross section of the trunk. The process of wood heating by a cloud-to-ground lightning discharge is described by the system of unsteady heat conduction differential equations with corresponding initial and boundary conditions. The stress-strain state of a tree trunk due to thermal stresses is simulated. A parametric study of the effect of discharge current-voltage characteristics on the temperature distribution in a tree trunk has been conducted. The current ranged from 15 to 35kA at a voltage of about 100kV. The voltage varied in the range from 50 to 120kV at a current of about 23.5kA. Thermal stress dependences on the radial coordinate have been obtained. The sizes of high temperature particles resulting from dispersing the surface layers of a coniferous tree have been determined.
Режим доступа: по договору с организацией-держателем ресурса
Jazyk:angličtina
Vydáno: 2017
Témata:
труды учёных ТПУ
электронный ресурс
cloud-to-ground lightning discharge
particle formation
thermal stress
conifer
грозовые разряды
температурные воздействия
хвойные леса
хвойные деревья
On-line přístup:http://dx.doi.org/10.17654/MS102051033
Médium: Elektronický zdroj Kapitola
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=655809

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