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The results of 3D hydrodynamic simulation of mass transfer in semidetached binaries of different types (cataclysmic variables and low-mass X-ray binaries) are presented. We find that taking into account of a circumbinary envelope leads to…

Astrophysics · Physics 2009-10-30 D. V. Bisikalo , A. A. Boyarchuk , V. M. Chechetkin , O. A. Kuznetsov , D. Molteni

Results of numerical simulations of matter flows in a semidetached binary system similar to the low-mass X-ray binary X1822--371 are presented. Three-dimensional modeling of the mass transfer gas dynamics makes it possible to investigate…

Astrophysics · Physics 2007-05-23 D. V. Bisikalo , A. A. Boyarchuk , O. A. Kuznetsov , V. M. Chechetkin

Results of 3D gas dynamical simulation of mass transfer in binaries are presented for systems with various values of viscosity. Analysis of obtained solutions shows that in the systems with low value of viscosity the flow structure is…

Astrophysics · Physics 2009-10-31 D. V. Bisikalo , A. A. Boyarchuk , O. A. Kuznetsov , V. M. Chechetkin

The results of three-dimensional numerical simulations of the flow of matter in non-magnetic semidetached binary systems are presented. Self-consistent solutions indicate the absence of a shock interaction between the stream of matter…

We have performed three-dimensional numerical simulations of accretion discs in a close binary system using the Smoothed Particle Hydrodynamics method. Our result show that, contrary to previous claims, 3D discs do exist even when the…

Astrophysics · Physics 2009-09-25 Hiroshi Yukawa , Henri M. J. Boffin , Takuya Matsuda

The results of three-dimensional numerical simulations of mass transfer in semidetached binaries after mass transfer termination is presented and the structure of residual accretion disk was investigated. It was shown that after the mass…

Astrophysics · Physics 2007-05-23 D. V. Bisikalo , A. A. Boyarchuk , A. A. Kilpio , O. A. Kuznetsov , V. M. Chechetkin

We present the results of three-dimensional numerical simulations of mass transfer in semi-detached binary systems in which the mass-losing star is rotating. The cases of aligned and misaligned non-synchronous rotation of the donor star are…

Astrophysics · Physics 2007-05-23 D. V. Bisikalo , A. A. Boyarchuk , O. A. Kuznetsov , V. M. Chechetkin

We use particle-in-magnetohydrodynamics-cells to model particle acceleration and magnetic field amplification in a high Mach, parallel shock in three dimensions and compare the result to 2-D models. This allows us to determine whether 2-D…

High Energy Astrophysical Phenomena · Physics 2019-09-25 Allard Jan van Marle , Fabien Casse , Alexandre Marcowith

We present the results of qualitative consideration of possible changes occurring during the transition from the hot accretion disc to the cool one. We argue the possible existence of one more type of spiral density waves in the inner part…

Astrophysics · Physics 2009-11-10 D. V. Bisikalo , A. A. Boyarchuk , P. V. Kaygorodov , O. A. Kuznetsov , T. Matsuda

The basic parameters determining the flow pattern for a nonviscous, non-heat-conducting gas in a semidetached binary system without a magnetic field are identified. Three-dimensional gas-dynamical modeling of the mass transfer enables…

Astrophysics · Physics 2007-05-23 D. V. Bisikalo , A. A. Boyarchuk , O. A. Kuznetsov , V. M. Chechetkin

We perform 2D and 3D numerical simulations of an accretion disc in a close binary system using the Simplified Flux vector Splitting (SFS) finite volume method. In our calculations, gas is assumed to be the ideal one, and we calculate the…

Astrophysics · Physics 2009-10-30 Makoto Makita , Kenji Miyawaki , Takuya Matsuda

We perform 2D and 3D numerical simulations of an accretion disc in a close binary system using the Simplified Flux vector Splitting (SFS) finite volume method. In our calculations, gas is assumed to be the ideal one, and we calculate the…

Astrophysics · Physics 2016-01-27 Makoto Makita , Takuya Matsuda

We have developed a three-dimensional numerical model and applied it to simulate plasma flows in semi-detached binary systems whose accretor possesses a strong intrinsic magnetic field. The model is based on the assumption that the plasma…

Solar and Stellar Astrophysics · Physics 2010-10-26 A. G. Zhilkin , D. V. Bisikalo

We present synthetic Doppler maps of gaseous flows in semidetached binaries based on the results of 3D gas dynamical simulations. Using of gas dynamical calculations alongside with Doppler tomography technique permits to identify main…

Astrophysics · Physics 2007-05-23 D. V. Bisikalo , A. A. Boyarchuk , O. A. Kuznetsov , V. M. Chechetkin

Simulating streamer discharges in 3D can computationally be very expensive, which is why 2D Cartesian simulations are sometimes used instead, especially when dealing with complex geometries. Although 2D Cartesian simulations can only be…

Plasma Physics · Physics 2024-01-24 Zhen Wang , Anbang Sun , Jannis Teunissen

Shocks waves are a ubiquitous feature of many astrophysical plasma systems, and an important process for energy dissipation and transfer. The physics of these shock waves are frequently treated/modeled as a collisional, fluid MHD…

Plasma Physics · Physics 2021-11-17 Colby C. Haggerty , Antoine Bret , Damiano Caprioli

There exists a large body of previous work using reduced two-dimensional models of the SOL, which model fluctuations in the drift-plane but approximate parallel transport with effective loss terms. Full size three-dimensional simulations of…

Plasma Physics · Physics 2022-07-27 T. E. G. Nicholas , J. Omotani , F. Riva , F. Militello , B. Dudson

We study 3D chaotic dynamics through an analysis of transport in a granular flow in a half-full spherical tumbler rotated sequentially about two orthogonal axes (a bi-axial "blinking" tumbler). The flow is essentially quasi-2D in any…

Dynamical Systems · Mathematics 2014-07-02 Ivan C. Christov , Richard M. Lueptow , Julio M. Ottino , Rob Sturman

We present 3D hydrodynamic simulations of the adiabatic interaction of a shock with a dense, spherical cloud. We compare how the nature of the interaction changes with the Mach number of the shock, $M$, and the density contrast of the…

Astrophysics of Galaxies · Physics 2016-03-23 J. M. Pittard , E. R. Parkin

Mode-I fracture exhibits microbranching in the high velocity regime where the simple straight crack is unstable. For velocities below the instability, classic modeling using linear elasticity is valid. However, showing the existence of the…

Statistical Mechanics · Physics 2017-06-30 Shay I. Heizler , David A. Kessler
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