The stellar core formation and high speed jets driven by the formed core are studied by using three-dimensional resistive magnetohydrodynamical (MHD) nested grid simulations. Starting with a Bonnor-Ebert isothermal cloud rotating in a uniform magnetic field, we calculate the cloud evolution from the molecular cloud core (nc = 10 6 cm, rc = 4.6×10 4 AU) to the stellar core (nc ≃ 10 23 cm, rc ≃ 1...

We re-analyse the resonant spin–flavour (RSF) solutions to the solar neutrino problem in the framework of analytic solutions to the solar magneto-hydrodynamics (MHD) equations. By substantially eliminating the arbitrariness associated to the magnetic field profile due to both mathematical consistency and physical requirements we propose the simplest scheme (MHD-RSF, for short) for solar neutrin...

Considering the magneto-hydrodynamic equations in a non-relativistic multi uid framework, we study the behavior of small amplitude perturbations in cold quark matter. Magneto-hydrodynamic equations, along with a suitable equation of state for the cold quark matter, are expanded using the reductive perturbation method. It is shown that in small amplitude approximation, such a medium should be co...

This study investigates transport phenomena in the weld pool (WP) of gas tungsten arc (GTA) welding of Nickel to 304 stainless steel. A finite element 3D simulation of fluid flow and heat transfer of spot welding without consumable is accomplished which leads to prediction of the weld zone shape, weld penetration and dilution of alloying elements. The model includes magneto-hydrodynamics (MHD),...

In this paper, we have studied the effect of radiation, magnetic field on the mixed convection flow of a magneto-micropolar fluid past a continuously moving surface with suction and blowing. The governing equations have been reduced to a system of nonlinear ordinary differential equations by similarity transformations, which have been solved numerically using finite difference method. The effec...

This comparative research investigates the influence of a flexible magnetic flux and chemical change on freely fluid motion (MHD) magneto hydrodynamic boundary layer incompressible nanofluid across an exponentially expanding sheet. Water ethanol are used for this analysis. The temperature transmission improvement fluids is described using Buongiorno model, which includes Brownian movement therm...

In this work we introduce a novel semi-implicit structure-preserving finite-volume/finite-difference scheme for the viscous and resistive equations of magnetohydrodynamics (MHD) based on an appropriate 3-split governing PDE system, which is decomposed into first convective subsystem, second subsystem involving coupling velocity field with magnetic third pressure-velocity coupling. The nonlinear...

Multidimensional modeling of phenomena and processes occurring during the expansion laser-produced plasma for different irradiation conditions related to both laser beam parameters target constructions is a very complex issue, especially when requires consideration kinetic associated with development various types microscopic instability. PIC codes create such possibility, but their use limited...

The theory of the formation first stars in Universe, so-called Population III (Pop III), has until now largely neglected impact magnetic fields. Complementing a series recent studies magneto-hydrodynamic (MHD) aspects Pop star formation, we here carry out suite idealized numerical experiments where ascertain how fragmentation properties primordial protostellar discs are modified if MHD effects ...