MULTIGRAIN: a smoothed particle hydrodynamic algorithm for multiple small dust grains and gas
نویسندگان
چکیده
منابع مشابه
A fast and explicit algorithm for simulating the dynamics of small dust grains with smoothed particle hydrodynamics
We describe a simple method for simulating the dynamics of small grains in a dusty gas, relevant to micron-sized grains in the interstellar medium and grains of centimetre size and smaller in protoplanetary discs. The method involves solving one extra diffusion equation for the dust fraction in addition to the usual equations of hydrodynamics. This “diffusion approximation for dust” is valid wh...
متن کاملSmoothed dissipative particle dynamics - a mesoscopic particle-based hydrodynamic technique for complex fluids
Smoothed dissipative particle dynamics (SDPD) combines two popular mesoscopic techniques, the smoothed particle hydrodynamics and dissipative particle dynamics (DPD) methods, and can be considered as an improved DPD approach. Advantages of the SDPD method over conventional DPD include the possibility of using an arbitrary equation of state, direct input of transport properties, and a well-defin...
متن کاملParallelization of a Smoothed Particle Hydrodynamic Code for Simulation of Shocks in Accretion Disks
We present the parallelization of a Serial Code that was designed to model shocks around black hole in accretion disks using the Smoothed Particles Hydrodynamics (SPH). The goal we obtained with our parallelization is threefold: (1) Execution speed gain nearly proportional to the number of processors; (2) Processing a number of SPH particles so high that doesn’t fit into a single computer; (3) ...
متن کاملDusty gas with one fluid in smoothed particle hydrodynamics
In a companion paper we have shown how the equations describing gas and dust as two fluids coupled by a drag term can be re-formulated to describe the system as a single fluid mixture. Here we present a numerical implementation of the one-fluid dusty gas algorithm using Smoothed Particle Hydrodynamics (SPH). The algorithm preserves the conservation properties of the SPH formalism. In particular...
متن کاملSmoothed Particle Magnetohydrodynamics – I. Algorithm and tests in one dimension
In this paper we show how the Smoothed Particle Hydrodynamics (SPH) equations for ideal Magnetohydrodynamics (MHD) can be written in conservation form with the positivity of the dissipation guaranteed. We call the resulting algorithm Smoothed Particle Magnetohydrodynamics (SPMHD). The equations appear to be accurate, robust and easy to apply and do not suffer from the instabilities known to exi...
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: Monthly Notices of the Royal Astronomical Society
سال: 2018
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/sty367