Abstract
In the article, it is considered a modification of an integral model of unsteady turbulent jet with a presence of pressure force. Stationary solutions of the presented model is compared with well-known analytical results of classical models. It is shown that the inclusion of pressure forces changes dynamic parameters of a jet by about 15%. An analytical solution of a steady forced buoyant jet that corresponds to a volcanic outburst is deduced. An analytical solution for the spontaneous jet of convective surface layer is presented. The simplest model of an ensemble of the buoyant jets of convective surface layer is built. A hydrodynamic formation mechanism of vertical profiles of the turbulent diffusivity and the turbulent statistical moments of the atmospheric surface layer related to the ascent of the jets’ system, is formulated.
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Vulfson, A., Borodin, O., Nikolaev, P. (2018). Convective Jets: Volcanic Activity and Turbulent Mixing in the Boundary Layers of the Atmosphere and Ocean. In: Karev, V., Klimov, D., Pokazeev, K. (eds) Physical and Mathematical Modeling of Earth and Environment Processes. PMMEEP 2017. Springer Geology. Springer, Cham. https://doi.org/10.1007/978-3-319-77788-7_9
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