M. A. Istomina, T. G. Elizarova, “Quasi-gasdynamic algorithm in the polar coordinate system and a numerical simulation of instabilities in accretion disk flow”, Keldysh Institute preprints, 2016,092, 25 pp.

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Quasi-gasdynamic algorithm in the polar coordinate system and a numerical simulation of instabilities in accretion disk flow

M. A. Istomina, T. G. Elizarova

Abstract: Quasi gas-dynamic equations in the polar coordinate system together with the finite-volume numerical scheme are constructed. Obtained algorithm is used for the numerical simulation of the large-scale instability development in the gas dynamic accretion disk around a gravity center.

Keywords: gas dynamic equations, polar coordinate system, quasi gas dynamic approach, central-difference approximation, accretion disk.

DOI: 10.20948/prepr-2016-92