Disk modelling by radiation-magnetohydrodynamic simulations
نویسندگان
چکیده
منابع مشابه
Formation of Stationary Magnetohydrodynamic Outflows from a Disk by Time-dependent Simulations
We report the discovery of a family of stationary magnetohydrodynamic (MHD) outÑows from a disk found by time-dependent, axisymmetric MHD simulations. The initial poloidal magnetic Ðeld threading the disk was taken to be a tapered monopole Ðeld, with the Ðeld strength on the disk decreasing outwardly to small values. At the disk surface, matter was given a small initial push with a speed less t...
متن کاملMagnetohydrodynamic Simulations of Disk Galaxy Formation: the Magnetization of the Cold and Warm Medium
Using magnetohydrodynamic (MHD) adaptive mesh refinement simulations, we study the formation and early evolution of disk galaxies with a magnetized interstellar medium. For a 10 M⊙ halo with initial NFW dark matter and gas profiles, we impose a uniform 10 G magnetic field and follow its collapse, disk formation and evolution up to 1 Gyr. Comparing to a purely hydrodynamic simulation with the sa...
متن کاملModelling Disk-Planet Interactions in N-Body Numerical Simulations
In this article we review the main results of density waves theory and then, we describe a simple way to simulate planet-disk interactions in N-body numerical simulations. We present an algorithm for type I migrators, based on the fact that, from a formal point of view, density waves theory is equivalent to a frictional gaseous force between a massive perturber and a protoplanet. The implementa...
متن کاملGeneral Relativistic Magnetohydrodynamic Simulations of Jet Formation with a Thin Keplerian Disk
We have performed several simulations of black hole systems (non-rotating, black hole spin parameter a = 0.0 and rapidly rotating, a = 0.95) with a geometrically thin Keplerian disk using the newly developed RAISHIN code. The simulation results show the formation of jets driven by the Lorentz force and the gas pressure gradient. The jets have mildly relativistic speed (& 0.4 c). The matter is c...
متن کاملSimulations of Electron Magnetohydrodynamic Turbulence
We present numerical simulations of electron magnetohydrodynamic (EMHD) and electron reduced MHD (ERMHD) turbulence. Comparing scaling relations, we find that both EMHD and ERMHD turbulence show similar spectra and anisotropy. We develop new techniques to study anisotropy of EMHD turbulence. Our detailed study of anisotropy of EMHD turbulence supports our earlier result of k‖ ∝ k ⊥ scaling, whe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2012
ISSN: 2100-014X
DOI: 10.1051/epjconf/20123906005