A computational hydrodynamic model of interacting galaxies is presented. The interstellar medium (ISM) is described by a model of gravitational multicomponent single-velocity hydrodynamics. A model based on first moments of the collisionless Boltzmann equation is used to describe the stellar component and dark matter. Subgrid processes of star formation and supernovae feedback, as well as cooling and heating functions are added to the hydrodynamic model. The computational model includes chemical and nuclear reactions of the basic forms of hydrogen and helium before the formation of the helium hydride ion. The hydrodynamic equations have a suitable form for solving by a unified computational method based on the “Harten – Lax – van Leer” (HLL) method. The equations and the numerical method are written in vector form to use advanced vector extensions AVX-512 to speed up the calculations. A parallel implementation of the model and some computational simulation experiments on the chemical dynamics of interacting galaxies are presented.

提出了相互作用星系的计算流体力学模型。星际介质（ISM）由引力多分量单速流体动力学模型描述。基于无碰撞玻尔兹曼方程的第一矩的模型用于描述恒星成分和暗物质。恒星形成和超新星反馈的子网格过程以及冷却和加热功能被添加到流体动力学模型中。该计算模型包括在形成氢化氦离子之前氢和氦的基本形式的化学反应和核反应。流体力学方程式具有适合通过基于“ Harten – Lax – van Leer”（HLL）方法的统一计算方法求解的形式。方程和数值方法以矢量形式编写，以使用高级矢量扩展AVX-512来加快计算速度。提出了该模型的并行实现以及相互作用星系化学动力学的一些计算模拟实验。