Effect of thermal radiation of forest fire on the environment

Валендик, Э. Н.; Kosov, I. V.

doi:10.1134/s1995425508040012

Cited by 16 publications

(17 citation statements)

References 3 publications

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“…Data of experimental burns, conducted by employees of the Institute of forest of the Siberian Branch of the Russian Academy of Science in vicinities of Krasnoyarsk are used for development of the basic scenarios of influence of radiant thermal flux from forest fire front. Dependence [11] is used for an estimation of thermal flux value from forest fire front: …”

Section: Physical and Mathematical Statementsmentioning

confidence: 99%

Scenario Modeling of Thermal Influence from Forest Fire Front on a Coniferous Tree Trunk

2016

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Abstract. Scenario research results of heat transfer and tissue damage in three-layered tree trunk influenced by heat flux from forest fire are presented. The problem is solved in two-dimensional statement in polar coordinates. The typical range of influence parameters (heat flux from forest fire front, trunk radius, coniferous species, air temperature, duration of exposure and distance from fire line) is considered. Temperature distributions in different moments of time are obtained. Condition of tree damage by forest fire influence is under consideration in this research. Information summarized using tables with scenario and fire consequences results.

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Section: Physical and Mathematical Statementsmentioning

confidence: 99%

Scenario Modeling of Thermal Influence from Forest Fire Front on a Coniferous Tree Trunk

2016

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“…The main impact of a forest fire is directed on the enclosing structures of a residential or industrial building [9][10][11][12][13][14]. The main mechanism of heat transfer in this case is radiant heat transfer [15]. Conducting large-scale experiments is either prohibited or difficult due to the inability to control all the parameters of the process [16].…”

Section: Introductionmentioning

confidence: 99%

Mathematical simulation of forest fire front influence on wood-based building using one-dimensional model of heat transfer

Baranovskiy

Malinin

2020

E3S Web Conf.

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The purpose of the present paper is to mathematical simulation of heat transfer in enclosures of wood-based building when exposed to thermal radiation from forest fire front. One-dimensional mathematical model is used. Mathematically, heat transfer in building enclosures is described by system of non-stationary equations of heat conduction with corresponding initial and boundary conditions. It is suggested to use several scenarios of forest fire impact. Temperature distribution on wall depth is obtained for different scenarios of forest fire impact on building enclosures.

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“…The fraction of thermal radiation in the energy balance of forest fire depends on its kind and intensity, but it can reach up than 90% (Valendik and Kosov [3]). It has been assumed that most of forest fire heat is transmitted by irradiation.…”

Section: General Concepts Of the Modelmentioning

confidence: 99%

Safety in forest fire fighting action: a new radiometric model to evaluate the safety distance for firemen working with hand-operated systems

Bertoldo

Corgnati

Losso

et al. 2012

Modelling, Monitoring and Management of Forest Fires III

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Fire event management always needs human intervention in order to extinguish forest fires. Firemen's equipment has reached high performance and safety standards but high temperatures occurring in the proximity of a forest fire may cause an increase in bodily temperature and dehydration. Therefore, it is important to identify a distance limit at which an operator can work without problems and complications due to the heat during forest fire fighting actions.This work describes a new approach to find a safety limit for firemen. The distance limit at which the operators can work without any consequence is evaluated considering the bodily temperature increase of a man exposed for a period of time at the thermal radiations coming from the fire. The main characteristic of the model is the use of radiometry to evaluate the amount of thermal energy transferred. By varying the distance between the fire and the operator it is possible to evaluate the bodily temperature increase.Safety distance limit is identified when human body temperature starts to be dangerous (38.5°C).In order to evaluate the distance safety value a fire model and an operator model are given. The fire model is based on the international Brown and Davis forest fire classification in order to consider some various realistic forest fire types. The fire fighter representation is established according to physiological and medical data in order to have a good representation of a real fireman.The results of the model have been compared with the ones coming from other models used for the same purpose based on probabilistic methods and the comparison confirms the good validity of the presented model. This fact, together with the simplicity of the model structure and the practicality of the safety distance as a reference limits allows the model to be used in future applications in order to identify and prevent some possible dangerous situations for operator engaged in forest fire fighting.

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Effect of thermal radiation of forest fire on the environment

Cited by 16 publications

References 3 publications

Scenario Modeling of Thermal Influence from Forest Fire Front on a Coniferous Tree Trunk

Scenario Modeling of Thermal Influence from Forest Fire Front on a Coniferous Tree Trunk

Mathematical simulation of forest fire front influence on wood-based building using one-dimensional model of heat transfer

Safety in forest fire fighting action: a new radiometric model to evaluate the safety distance for firemen working with hand-operated systems

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