Mathematical modeling of spontaneous combustion of peat soil
https://doi.org/10.26897/1997-6011-2025-1-48-55
Abstract
The aim ofthe study is to develop a mathematical modelthat can be used in the future to develop a computer program for forecasting the occurrence of peat fires on lands involved in agricultural circulation. A mathematical description of the spontaneous combustion process is given, which occurs according to the following scheme: the heat flow heats the surface to the ignition temperature, resulting in a self-heating zone. As a result, a combustion (smoldering) wave is formed, which is capable of self-propagating. The methodology and laboratory equipment for studying the self-heating of peat samples are presented. The results of experimental and theoretical studies ofthe chemical reaction of self-heating of peat samples are analyzed. The activation energy of peat samples was determined by selecting and substituting values into equations and comparing the obtained results with the calculated ones. The results ofthe study made it possible to estimate a high correlation with experimental data depending on the content oftotal organic carbon in peat soil. Thus, the mathematical model can be used to predictthe occurrence ofthe spontaneous combustion effect.
Keywords
peat soil,
bulk density,
degree of decomposition,
ash content,
fires,
ecology,
carbon emissions,
carbon,
sulfur,
iron
Supporting agencies: The research was carried out at the expense of a grant from the Russian Science Foundation No. 24-16-00081 (URL: https://rscf.ru/project/24-16-00081/).
About the Authors
O. N. Didmanidze
Russian State Agrarian University – Timiryazev Moscow Agricultural Academy;
Goryachkin Institute of Mechanics and Power Engineering
Russian Federation
Russian Federation
Оtari N. Didmanidze, RAS academician, DSc (Eng), professor,
49 Timiryazevskaya St., Moscow, 127434
A. V. Evgrafov
Russian State Agrarian University – Timiryazev Moscow Agricultural Academy;
Goryachkin Institute of Mechanics and Power Engineering
Russian Federation
Russian Federation
Alexander V. Evgrafov,DSc (Eng), associate professor,
49 Timiryazevskaya St., Moscow, 127434
A. S. Guzalov
Russian State Agrarian University – Timiryazev Moscow Agricultural Academy;
Goryachkin Institute of Mechanics and Power Engineering
Russian Federation
Russian Federation
Nikolai N. Pulyaev,CSc (Eng), associateprofessor,
49 Timiryazevskaya St., Moscow, 127434
N. N. Pulyaev
Russian State Agrarian University – Timiryazev Moscow Agricultural Academy;
Goryachkin Institute of Mechanics and Power Engineering
Russian Federation
Russian Federation
Artembek S. Guzalov,CSc (Eng),
49 Timiryazevskaya St., Moscow, 127434
A. V. Kurilenko
Russian State Agrarian University – Timiryazev Moscow Agricultural Academy;
Goryachkin Institute of Mechanics and Power Engineering
Russian Federation
Russian Federation
Alexey V. Kurilenko,assistant,
49 Timiryazevskaya St., Moscow, 127434
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Review
For citations:
Didmanidze O.N., Evgrafov A.V., Guzalov A.S., Pulyaev N.N., Kurilenko A.V. Mathematical modeling of spontaneous combustion of peat soil. Prirodoobustrojstvo. 2025;(1):48-55. (In Russ.) https://doi.org/10.26897/1997-6011-2025-1-48-55
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