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Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2018, Volume 59, Issue 2, Pages 23–30
DOI: https://doi.org/10.15372/PMTF20180103
(Mi pmtf592)
 

This article is cited in 3 scientific papers (total in 3 papers)

On the nonlinear dynamics of turbulent thermals in shear flow

L. Kh. Ingel'ab

a Taifun Scientific and Production Association, Obninsk, 249038, Russia
b Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences, Moscow, 119017, Russia
Full-text PDF (193 kB) Citations (3)
Abstract: The nonlinear integral model of a turbulent thermal is extended to the case of the presence of a horizontal component of its motion with respect to the medium (for example, the rise of a thermal in shear flow). In contrast to traditional models, the possibility of heat release in the thermal is taken into account. For a piecewise constant vertical horizontal velocity profile medium and a constant vertical velocity shear, analytical solutions are obtained which describe different dynamic modes of thermals. The nonlinear interaction between the horizontal and vertical components of thermal motion because each of them influences the rate of entrainment of the ambient medium, i.e., the rate of increase in the size of the thermal and, hence, its mobility. It is shown that the enhancement of the entrainment of the medium due to the interaction of the thermal with the cross flow can lead to a significant decrease in the mobility of the thermal.
Keywords: convection, thermals, turbulence, integral models, shear flows, nonlinearity, analytical solutions.
Received: 21.12.2016
Revised: 17.04.2017
English version:
Journal of Applied Mechanics and Technical Physics, 2018, Volume 59, Issue 2, Pages 206–211
DOI: https://doi.org/10.1134/S0021894418020037
Bibliographic databases:
Document Type: Article
UDC: 532.5
Language: Russian
Citation: L. Kh. Ingel', “On the nonlinear dynamics of turbulent thermals in shear flow”, Prikl. Mekh. Tekh. Fiz., 59:2 (2018), 23–30; J. Appl. Mech. Tech. Phys., 59:2 (2018), 206–211
Citation in format AMSBIB
\Bibitem{Ing18}
\by L.~Kh.~Ingel'
\paper On the nonlinear dynamics of turbulent thermals in shear flow
\jour Prikl. Mekh. Tekh. Fiz.
\yr 2018
\vol 59
\issue 2
\pages 23--30
\mathnet{http://mi.mathnet.ru/pmtf592}
\crossref{https://doi.org/10.15372/PMTF20180103}
\elib{https://elibrary.ru/item.asp?id=32773490}
\transl
\jour J. Appl. Mech. Tech. Phys.
\yr 2018
\vol 59
\issue 2
\pages 206--211
\crossref{https://doi.org/10.1134/S0021894418020037}
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  • https://www.mathnet.ru/eng/pmtf/v59/i2/p23
  • This publication is cited in the following 3 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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    Prikladnaya Mekhanika i Tekhnicheskaya Fizika Prikladnaya Mekhanika i Tekhnicheskaya Fizika
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