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Models for the dynamics of dust-like matter in the self-gravity field: The method of hydrodynamic substitutions

  • Nuclei, Particles, Fields, Gravitation, and Astrophysics
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Abstract

Models for the dynamics of a dust-like medium in the self-gravity field are investigated. Solutions of the corresponding problems are constructed by the method of hydrodynamic substitutions generalizing the Cole–Hopf substitutions. The method is extended to multidimensional ideal and viscous fluid flows with cylindrical and spherical symmetries for which exact solutions are constructed. Solutions for the dynamics of self-gravitating dust with arbitrary initial distributions of both fluid density and velocity are constructed using special coordinate transformations. In particular, the problem of cosmological expansion is considered in terms of Newton’s gravity theory. Models of a one-dimensional viscous dust fluid flow and some problems of gas hydrodynamics are considered. Examples of exact solutions and their brief analysis are provided.

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Authors and Affiliations

  1. Kapitza Research Technological Institute, Ulyanovsk State University, ul. L. Tolstogo 42, Ulyanovsk, 432017, Russia

    V. M. Zhuravlev

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  1. V. M. Zhuravlev
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Correspondence to V. M. Zhuravlev.

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Original Russian Text © V.M. Zhuravlev, 2017, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2017, Vol. 152, No. 3, pp. 495–510.

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Zhuravlev, V.M. Models for the dynamics of dust-like matter in the self-gravity field: The method of hydrodynamic substitutions. J. Exp. Theor. Phys. 125, 420–433 (2017). https://doi.org/10.1134/S1063776117090102

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  • DOI: https://doi.org/10.1134/S1063776117090102

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