Starting from the non-relativistic Pauli description of spin 1 2 particles, a set of fluid equations, governing the dynamics of such particles interacting with external fields and other particles, is derived. The equations describe electrons, positrons, holes, and similar conglomerates. In the case of electrons, the magnetohydrodynamic limit of an electron–ion plasma is investigated. The result...

My research centers on theoretical study of compact objects (neutron stars and black holes, pulsars), radiative processes (radiative transfer, stellar atmospheres, effects of strong magnetic fields), astrophysical fluid dynamics and MHD (accretion disks, density waves, binaries, stellar oscillations, gravitational collapse), gravitational waves, atomic physics and condensed matter in astrophysi...

Starting from the non-relativistic Pauli description of spin 1 2 particles, a set of fluid equations, governing the dynamics of such particles interacting with external fields and other particles, is derived. The equations describe electrons, positrons, holes, and similar conglomerates. In the case of electrons, the magnetohydrodynamic limit of an electron–ion plasma is investigated as well as ...

Starting from the non-relativistic Pauli description of spin 1 2 particles, a set of fluid equations, governing the dynamics of such particles interacting with external fields and other particles, is derived. The equations describe electrons, positrons, holes, and similar conglomerates. In the case of electrons, the magnetohydrodynamic limit of an electron–ion plasma is investigated. The result...

among the all parameters affecting the performance of a downhole de-oiling hydrocyclone, the investigation of internal flow field deserves more attempts especially in the petroleum industry. in this study, the effects of inlet flow rate, inlet oil volume fraction, and oil droplet diameter on the separation efficiency and pressure drop ratio have been investigated along the hydrocyclone body. al...

many diseases are related to cerebrospinal .uid (csf) hydrodynamics. therefore, understanding the hydrodynamics of csf .ow and intracranial pressure is helpful for obtaining deeper knowledge of pathological processes and providing better treatments. furthermore, engineering a reliable computational method is promising approach for fabricating in vitro models which is essential for inventing gen...

In this paper we present the analytic solutions for two test problems involving two-fluid mixtures of dust and gas in an astrophysical context. The solutions provide a means of benchmarking numerical codes designed to simulate the non-linear dynamics of dusty gas. The first problem, DUSTYBOX, consists of two interpenetrating homogeneous fluids moving with relative velocity difference. We provid...

Many astrophysical processes involving magnetic fields and quasi-stationary processes are well described when assuming the fluid as a perfect conductor. For these systems, the idealmagnetohydrodynamics (MHD) description captures the dynamics effectively and a number of well-tested techniques exist for its numerical solution. Yet, there are several astrophysical processes involving magnetic fiel...

Accurate simulations of flows in stellar interiors are crucial to improving our understanding structure and evolution. Because the typically slow merely tiny perturbations on top a close balance between gravity pressure gradient, such place heavy demands numerical hydrodynamics schemes. We demonstrate how discretization errors grids reasonable size can lead spurious orders magnitude faster than...