Particle–Particle Particle–Tree: A Direct-Tree Hybrid Scheme for CollisionalN-Body Simulations

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

BRIDGE: A Direct-tree Hybrid N -body Algorithm for Fully Self-consistent Simulations of Star Clusters and their Parent Galaxies

We developed a new direct-tree hybrid N -body algorithm for fully self-consistent N -body simulations of star clusters in their parent galaxies. In such simulations, star clusters need high accuracy, while galaxies need a fast scheme because of the large number of the particles required to model it. In our new algorithm, the internal motion of the star cluster is calculated accurately using the...

متن کامل

A guiding centre direct implicit scheme for magnetized plasma simulations

A new implicit fully electromagnetic particle in cell method is presented in which the full ion dynamic and all the electron guiding centre drifts of a magnetized collisionless plasma are retained. This code retains the inertial effects on the electrons. It must be used for time steps larger or so than an electron cyclotron period, it is only valid for an electron plasma beta be < 1. Therefore,...

متن کامل

Efficient Scheme for Active Particle Selection in N-body Simulations

We propose an efficient method for active particle selection, working with Hermite Individual Time Steps (HITS) scheme in direct N-body simulation code φGRAPE . For a simulation with N particles, this method can reduce the computation complexity of active particle selection, from O(N ·Nstep) to O(Nact ·Nstep), where Nact is the average active particle number in every time step which is much les...

متن کامل

An optimum time-stepping scheme for N-body simulations

We present a new time-stepping criterion for N -body simulations that is based on the true dynamical time of a particle. This allows us to follow the orbits of particles correctly in all environments since it has better adaptivity than previous time-stepping criteria used in N -body simulations. Furthermore, it requires far fewer force evaluations in low density regions of the simulation and ha...

متن کامل

Armentum: a hybrid direct search optimization methodology

Design of experiments (DOE) offers a great deal of benefits to any manufacturing organization, such as characterization of variables and sets the path for the optimization of the levels of these variables (settings) trough the Response surface methodology, leading to process capability improvement, efficiency increase, cost reduction. Unfortunately, the use of these methodologies is very limite...

متن کامل

ذخیره 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: Publications of the Astronomical Society of Japan

سال: 2011

ISSN: 0004-6264,2053-051X

DOI: 10.1093/pasj/63.4.881