A New Hydrodynamic Model for Numerical Simulation of Interacting Galaxies on Intel Xeon Phi Supercomputers

10th International Conference on Numerical Modeling of Space Plasma Flows: ASTRONUM-2015

Kulikov, Igor^1 ; Chernykh, Igor^1 ; Tutukov, Alexander^2

Institute of Computational Mathematics and Mathematical Geophysics SB RAS, 6-th Lavrentyev avenue, Novosibirsk, Russia^1

Institute of Astronomy RAS, 48-th Pyatnitskaya Street, Moscow, Russia^2

关键词: Collisionless boltzmann equations;    Disk galaxies;    Hydrodynamic equations;    Hydrodynamic model;    Hyperbolic equations;    Molecular hydrogen;    Multicomponents;    Star-formation process;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/719/1/012006/pdf
DOI  :  10.1088/1742-6596/719/1/012006

来源: IOP

【 摘 要 】

This paper presents a new hydrodynamic model of interacting galaxies based on the joint solution of multicomponent hydrodynamic equations, first moments of the collisionless Boltzmann equation and the Poisson equation for gravity. Using this model, it is possible to formulate a unified numerical method for solving hyperbolic equations. This numerical method has been implemented for hybrid supercomputers with Intel Xeon Phi accelerators. The collision of spiral and disk galaxies considering the star formation process, supernova feedback and molecular hydrogen formation is shown as a simulation result.