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Physical and Mathematical Modeling of Earth and Environment Processes (2018) pp 359–367Cite as

Linear Approximations of Turbulent Moments of Horizontal Velocity and Temperature Fluctuations Within a Forced Convection Sublayer of the Atmospheric Surface Layer

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Abstract

In the convective surface layer a heavy forced convection sublayer is distinguished. The turbulent moments of this sublayer depend mainly on the buoyance flux. It is shown that “linear” approximations are effective for describing turbulent moments of this sublayer. These approximations correspond to truncated Taylor series expansions in a modified height, that include only two terms. The first-order expansion terms do not take into account the wind and represent the free convection limits of the Monin-Obukhov similarity theory. The second-order expansion terms take into account the wind and its effect on the convection. The proposed approximations are compared with the experimental data.

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Authors and Affiliations

  1. Institute of Oil and Gas Problems, Russian Academy of Sciences, Moscow, 117701, Russia

    Alexander Vulfson

  2. National Research University Higher School of Economics, Moscow, 101000, Russia

    Alexander Vulfson

  3. National University of Science and Technology MISIS, Moscow, 119049, Russia

    Petr Nikolaev

Authors
  1. Alexander Vulfson
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  2. Petr Nikolaev
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Corresponding author

Correspondence to Alexander Vulfson .

Editor information

Editors and Affiliations

  1. Institute for Problems in Mechanics Russian Academy of Sciences (IPMech RAS), Moscow, Russia

    V. I. Karev

  2. Institute for Problems in Mechanics Russian Academy of Sciences (IPMech RAS), Moscow, Russia

    Dmitry Klimov

  3. Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia

    Konstantin Pokazeev

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Vulfson, A., Nikolaev, P. (2019). Linear Approximations of Turbulent Moments of Horizontal Velocity and Temperature Fluctuations Within a Forced Convection Sublayer of the Atmospheric Surface Layer. In: Karev, V., Klimov, D., Pokazeev, K. (eds) Physical and Mathematical Modeling of Earth and Environment Processes (2018). Springer Proceedings in Earth and Environmental Sciences. Springer, Cham. https://doi.org/10.1007/978-3-030-11533-3_35

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