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Structural Features of the Dip Process of Thermics with Negative Buoyancy

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Processes in GeoMedia—Volume I

Abstract

The paper presents the results of a study of the process of immersion in fresh water of a finite volume of salt water (or thermics with negative buoyancy) using laboratory and numerical experiments. In a series of laboratory experiments were recorded already known structural features of the process: mushroom shape and transformation into a vortex ring. The calculated flows were obtained using a nonlinear 2d model of the dynamics of stratified in density fluid. The analysis of model fields: vorticity, current function, density and tracer of neutral buoyancy introduced to identify the water mass of thermic, allowed to identify the main physical factors responsible for the formation of the observed mushroom form. As it turned out, the key structure-forming factor of the evolution of thermic during its immersion is the baroclinic vortex generation. A parallel is drawn between the processes of immersion of thermic and the collapse of density inhomogeneity in a stable stratified fluid.

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References

  • Barenblatt GI (1978) Dynamics of turbulent spots and intrusions in a stable stratified fluid. Izv USSR Acad Sci 14(2):195–206

    Google Scholar 

  • Belotserkovsky OM (2003) Turbulence: new approaches. Nauka, Moscow, 286 p

    Google Scholar 

  • Chetverushkin BN (2003) The use of high-performance multiprocessor computing in gas dynamics. In: Mathematical modeling: problems and results. Nauka, Moscow, pp 123–198 (2003)

    Google Scholar 

  • Gebhart B (1995) Free convective flow, heat and mass transfer. Mir, Moscow, B.1. 678 p

    Google Scholar 

  • Gershuni GZ (1989) Stability of convective flows. Nauka, Moscow, 492 p (in Russian)

    Google Scholar 

  • Gritsenko VA (1999) Yurova AA (1999) About the basic phases of separation of near-bottom gravity currents from the slope of the bottom. Oceanology 39(2):187–191 (in Russian)

    Google Scholar 

  • Gritsenko VA, Yurova AA (1997) About the propagation of the near-bottom gravity flow along the steep slope of the bottom. Oceanology 37(1):44–49 (in Russian)

    Google Scholar 

  • Ingel LKh (2016) On the theory of convective jets and thermals in the atmosphere. Izv Atmos Oceanic Phys 53(6):676–680 (in Russian)

    Google Scholar 

  • Inogamov N (1999) Development instabilities of Rayleigh-Taylor and Richtmyer-Meshkov in three-dimensional space: topology of vortex surfaces. Lett GETV 69(10):691–697

    Google Scholar 

  • Meleshko VV (1993) Dynamics of vortex structures. Naukova Dumka, Kyiv, 279 p (in Russian)

    Google Scholar 

  • Popov VA (1986) Development of a region of partially mixed fluid in a stratified medium. Izv USSR Acad Sci 22(4):389–394

    Google Scholar 

  • Roach P (1980) Computational fluid dynamics. Mir, Moscow, 616 p

    Google Scholar 

  • Scorer RS (1980) Environmental aerodynamics. Mir, Moscow, 549 p (in Russian)

    Google Scholar 

  • Turner JS (1977) Buoyancy effects in fluids. Mir, Moscow, 431 p (in Russian)

    Google Scholar 

  • Van Dyke M (1986) An album of fluid motion. Mir, Moscow, 184 p (in Russian)

    Google Scholar 

Download references

Acknowledgements

Model calculations were carried out in the framework of the state assignment number 0149-2019-0013, laboratory experiments—with the support of the RFFI grant No. 19-05-00717.

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Correspondence to A. A. Volkova .

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Volkova, A.A., Gritsenko, V.A. (2020). Structural Features of the Dip Process of Thermics with Negative Buoyancy. In: Olegovna, C. (eds) Processes in GeoMedia—Volume I. Springer Geology. Springer, Cham. https://doi.org/10.1007/978-3-030-38177-6_23

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