Computational modeling of the formation of a convective column by forest fires has been carried out. It has been established that in the case of an unstable atmosphere stratification the basic factor influencing the thermal column formation is the intensification of the processes of turbulent mixing and that at a stable atmosphere stratification a more significant factor determining the convective column formation is the action of the buoyancy force. It has been shown that a swirling flow in the convective column is formed due to the appearance of a tangential velocity component as a consequence of the local circulation arising against the background of large-scale motion owing to the thermal and orographic inhomogeneities of the underlying surface.
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 87, No. 5, pp. 602–606, September–October, 2014.
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Grishin, A.M., Matvienko, O.V. Numerical Investigation of the Formation of a Convective Column and a Fire Tornado by Forest Fires. J Eng Phys Thermophy 87, 1080–1093 (2014). https://doi.org/10.1007/s10891-014-1110-5
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DOI: https://doi.org/10.1007/s10891-014-1110-5