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MATHEMATICAL MODELING OF MHD PROCESSES FOR ASTROPHYSICAL OBJECTS IN 3D STATEMENT ON MESHES OF HIGH RESOLUTION

机译：高分辨率网格物体上3D陈述天体目标MHD过程的数学建模

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The paper presents numerical simulation results of interaction process of Supernova strong shock wave with interstellar molecular cloud. In the present problem statement gravitation, heat conductivity and radiative losses are neglected. The processes of deformation and fragmentation of molecular cloud, formation of passing through and reflected shock wave systems, contraction and ablation of the matter are investigated in detail. The post-processor treatment the results ofn calculations made it possible to distinguish the following features of the molecular cloud matter: the vortexes formation, erosion and ablation. After the hitting the cloud by the Supernova shock the reflected shock appears and moves upstream, the cloud surface is getting perturbed with the time, the Richtmyer-Meshkov instability begins to develop downstream. The next stage is characterized by expansion of the cloud and formation of complicated wave structure. After the primary shock wave vortexes are formed in time. The ablation process develops at the surface of the cloud. The vortexes form ringlike structure on the cloud surface. Those structures are transformed into vortex streets and initiate formation of the whirlpool studs. Counter rotating neighboring vortexes form primary and secondary systems of vortex structures. These vortex structures are stretched, bended and change their shape in time forming secondary, tertiary structures etc.
机译：本文给出了超新星强冲击波与星际分子云相互作用过程的数值模拟结果。在本问题陈述中，重力，热导率和辐射损耗被忽略。详细研究了分子云的变形和破碎，穿过和反射的冲击波系统的形成，物质的收缩和消融的过程。后处理器对计算结果的处理使得区分分子云物质的以下特征成为可能：涡流形成，腐蚀和烧蚀。在超新星震动撞击云层之后，反射的震动出现并向上游移动，随着时间的流逝，云层变得越来越不稳定，Richtmyer-Meshkov的不稳定性开始向下游发展。下一阶段的特征是云团的扩张和复杂波浪结构的形成。在初级冲击波形成后，旋涡会及时形成。消融过程在云层表面发展。涡流在云表面形成环形结构。这些结构被转变成涡街，并开始形成漩涡螺柱。反向旋转相邻的涡流形成涡流结构的初级和次级系统。这些涡旋结构被拉伸，弯曲并随时间改变其形状，从而形成二级，三级结构等。

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