Zobrazeno 1 - 10
of 98
pro vyhledávání: '"Montgomery, D. C."'
Numerical solutions of the incompressible magnetohydrodynamic (MHD) equations are reported for the interior of a rotating, perfectly-conducting, rigid spherical shell that is insulator-coated on the inside. A previously-reported spectral method is us
Externí odkaz:
http://arxiv.org/abs/physics/0702082
Publikováno v:
Phys. Rev. Lett. 97, 244503 (2006)
We investigate using direct numerical simulations with grids up to 1536^3 points, the rate at which small scales develop in a decaying three-dimensional MHD flow both for deterministic and random initial conditions. Parallel current and vorticity she
Externí odkaz:
http://arxiv.org/abs/physics/0607269
Autor:
Mininni, P. D., Montgomery, D. C.
We present a computational method to solve the magnetohydrodynamic equations in spherical geometry. The technique is fully nonlinear and wholly spectral, and uses an expansion basis that is adapted to the geometry: Chandrasekhar-Kendall vector eigenf
Externí odkaz:
http://arxiv.org/abs/physics/0602147
Autor:
Mininni, P. D., Montgomery, D. C.
We present direct numerical simulations of dynamo action in a forced Roberts flow. The behavior of the dynamo is followed as the mechanical Reynolds number is increased, starting from the laminar case until a turbulent regime is reached. The critical
Externí odkaz:
http://arxiv.org/abs/physics/0505192
We present direct numerical simulations and alpha-model simulations of four familiar three-dimensional magnetohydrodynamic (MHD) turbulence effects: selective decay, dynamic alignment, inverse cascade of magnetic helicity, and the helical dynamo effe
Externí odkaz:
http://arxiv.org/abs/physics/0412025
A three-dimensional numerical computation of magnetohydrodynamic dynamo behavior is described. The dynamo is mechanically forced with a driving term of the Taylor-Green type. The magnetic field development is followed from negligibly small levels to
Externí odkaz:
http://arxiv.org/abs/astro-ph/0412071
We explore some consequences of the ``alpha model,'' also called the ``Lagrangian-averaged'' model, for two-dimensional incompressible magnetohydrodynamic (MHD) turbulence. This model is an extension of the smoothing procedure in fluid dynamics which
Externí odkaz:
http://arxiv.org/abs/physics/0410159
We present a three--pronged numerical approach to the dynamo problem at low magnetic Prandtl numbers $P_M$. The difficulty of resolving a large range of scales is circumvented by combining Direct Numerical Simulations, a Lagrangian-averaged model, an
Externí odkaz:
http://arxiv.org/abs/physics/0410046
Numerical and analytical studies of decaying, two-dimensional (2D) Navier-Stokes (NS) turbulence at high Reynolds numbers are reported. The effort is to determine computable distinctions between two different formulations of maximum entropy predictio
Externí odkaz:
http://arxiv.org/abs/physics/0211024
We present numerical solutions of the two-dimensional Navier-Stokes equations by two methods; spectral and the novel Lattice Boltzmann Equation (LBE) scheme. Very good agreement is found for global quantities as well as energy spectra. The LBE scheme
Externí odkaz:
http://arxiv.org/abs/comp-gas/9303003