Výsledky vyhledávání - "V. A. Zheligovsky"

Weakly nonlinear stability to large-scale perturbations in convective magnetohydrodynamic systems without the α-effect

Autor: V. A. Zheligovsky

Publikováno v: Izvestiya, Physics of the Solid Earth. 42:1051-1067

The problem of weakly nonlinear stability with respect to large-scale perturbations in 3-D convective magnetohydrodynamic (MHD) states in which the α-effect is absent or insignificant (e.g., because the system has symmetry relative to a center or a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f846e8e8eb5dafb9060ed25af9f112ab
https://doi.org/10.1134/s1069351306120093

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A weakly nonlinear stability of centrally symmetric magnetohydrodynamic systems to perturbations involving large scales

Autor: V. A. Zheligovsky

Publikováno v: Izvestiya, Physics of the Solid Earth. 42:244-253

The problem of weakly nonlinear stability of 3-D centrally symmetric magnetohydrodynamic systems to perturbations involving large scales is considered. It is assumed that large space-time scales are absent in the magnetohydrodynamic state under study

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fa4ec4fa133818949a56731d71c02234
https://doi.org/10.1134/s1069351306030074

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Generation of multiscale magnetic field by parity-invariant time-periodic flows

Autor: O. M. Podvigina, V. A. Zheligovsky

Publikováno v: Geophysical and Astrophysical Fluid Dynamics
Geophysical and Astrophysical Fluid Dynamics, Taylor & Francis, 2003, 97, pp.225-248

We study generation of magnetic fields involving large spatial scales by time- and space-periodic small-scale parity-invariant flows. The anisotropic magnetic eddy diffusivity tensor is calculated by the standard procedure involving expansion of magn

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13e92e7c44a9bd6f8ad90ae2bfee8360
https://doi.org/10.1080/0309192032000101676

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Numerical modeling of collapse in ideal incompressible hydrodynamics

Autor: E. A. Kuznetsov, O. M. Podvigina, V. A. Zheligovsky

Publikováno v: Journal of Experimental and Theoretical Physics Letters. 74:367-370

The appearance of a singularity in the velocity-field vorticity ω at an isolated point irrespective of the symmetry of initial distribution is demonstrated numerically. The behavior of maximal vorticity |ω| near the collapse point is well approxima

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::14707321c8682cc5445f7ade777e9910
https://doi.org/10.1134/1.1427123

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Dynamo action in christopherson hexagonal flow

Autor: D. J. Galloway, V. A. Zheligovsky

Publikováno v: Geophysical & Astrophysical Fluid Dynamics. 88:277-293

Kinematic dynamo action is investigated for the Chiistopherson flow consisting of a horizontally periodic layer of identical hexagonal cells. In each cell a conducting fluid ascends at its centre and descends at its periphery. Boundary conditions are

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1c65ccfcc3fb66c7649ccae8316eff68
https://doi.org/10.1080/03091929808245477

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[Untitled]

Autor: V. A. Zheligovsky, O. M. Podvigina

Publikováno v: Journal of Scientific Computing. 12:433-464

An iterative method suitable for numerical solution of large systems of equations is presented. An extremal property of the Chebyshev polynomials is established, providing a logical foundation for the proposed procedure. A modification of the method

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c8702c58633e3e7693593e94c7847526
https://doi.org/10.1023/a:1025681013942

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