منابع مشابه
The effects of flux transport on interface dynamos
The operation of an interface dynamo (as has been suggested for the Sun and other stars with convective envelopes) relies crucially upon the effective transport of magnetic flux between two spatially disjoint generation regions. In the simplest models communication between the two regions is achieved solely by diffusion. Here we incorporate a highly simplified anisotropic transport mechanism in...
متن کاملMagnetic helicity fluxes in interface and flux transport dynamos
Context. Dynamos in the Sun and other bodies tend to produce magnetic fields that possess magnetic helicity of opposite sign at large and small scales, respectively. The build-up of magnetic helicity at small scales provides an important saturation mechanism. Aims. In order to understand the nature of the solar dynamo we need to understand the details of the saturation mechanism in spherical ge...
متن کاملOn Nodal Transport Methods
Two new classes of nodal methods, respectively weakly and strongly discontinuous ones, are introduced and applied to the neutron transport equations in X-Y geometry in the discrete ordinates approximation. These methods are then applied to approximate the solution of a well-known benchmark problem of the nuclear engineering literature. The results obtained are nally compared to the ones obtaine...
متن کاملFlux Periodicities in Loops of Nodal Superconductors
Supercurrents in superconducting flux threaded loops are expected to oscillate with the magnetic flux with a period of hc/2e. This is indeed true for s-wave superconductors larger than the coherence length ξ0. Here we show that for superconductors with gap nodes, there is no such strict condition for the supercurrent to be hc/2e rather than hc/e periodic. For nodal superconductors, the flux ind...
متن کاملA Domain Decomposition Method for a Two-scale Transport Equation with Energy Flux Conserved at the Interface
When a linear transport equation contains two scales, one diffusive and the other non-diffusive, it is natural to use a domain decomposition method which couples the transport equation with a diffusion equation with an interface condition. One such method was introduced by Golse, Jin and Levermore in [11], where an interface condition, which is derived from the conservation of energy density, w...
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ژورنال
عنوان ژورنال: Annals of Nuclear Energy
سال: 1991
ISSN: 0306-4549
DOI: 10.1016/0306-4549(91)90023-q