Simulation of Molecular Cloud Collision Dynamics Using Heterogeneous Systems
The results of computer simulation of the process of collision of rotating molecular clouds in the interstellar medium are presented. As matter is compressed, the gas density in the area of their collision increases; this leads to local changes in the shape and fragmentation of clouds. The gas densi...
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Published in | Journal of applied and industrial mathematics Vol. 17; no. 1; pp. 168 - 175 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Moscow
Pleiades Publishing
01.03.2023
Springer Nature B.V |
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Abstract | The results of computer simulation of the process of collision of rotating molecular clouds in the interstellar medium are presented. As matter is compressed, the gas density in the area of their collision increases; this leads to local changes in the shape and fragmentation of clouds. The gas density in the resulting condensations increases by many orders of magnitude, and gravitationally bound domains appear where star clusters can form. The process of star formation is accompanied by considerable spatial and temporal changes in the interstellar gas in these domains, turbulence of the interstellar medium, gravity, and a sharp change in magnetic and radiation fields at the prestellar stage of the evolution of new formations. The rotation of colliding molecular clouds has a great influence on the ongoing processes. The evolution of the matter of protostellar regions from the moment when they begin to form until the moment when they reach stellar density covers a huge range of scales. Simulation of such astrophysical processes on ultra-high resolution computational grids requires a substantial increase in computer power, and optimization of parallel computing on heterogeneous computing systems is required. |
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AbstractList | The results of computer simulation of the process of collision of rotating molecular clouds in the interstellar medium are presented. As matter is compressed, the gas density in the area of their collision increases; this leads to local changes in the shape and fragmentation of clouds. The gas density in the resulting condensations increases by many orders of magnitude, and gravitationally bound domains appear where star clusters can form. The process of star formation is accompanied by considerable spatial and temporal changes in the interstellar gas in these domains, turbulence of the interstellar medium, gravity, and a sharp change in magnetic and radiation fields at the prestellar stage of the evolution of new formations. The rotation of colliding molecular clouds has a great influence on the ongoing processes. The evolution of the matter of protostellar regions from the moment when they begin to form until the moment when they reach stellar density covers a huge range of scales. Simulation of such astrophysical processes on ultra-high resolution computational grids requires a substantial increase in computer power, and optimization of parallel computing on heterogeneous computing systems is required. |
Author | Rybakin, B. P. Goryachev, V. D. |
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Cites_doi | 10.1093/mnras/staa090 10.1016/j.compfluid.2018.03.009 10.1086/510771 10.1051/0004-6361/201628251 10.1038/nature09289 10.3847/1538-4365/ab007f 10.1086/174231 10.1093/mnras/stt203 10.1111/j.1365-2966.2010.16888.x 10.1134/S199508021804011X 10.2458/azu_uapress_9780816531240-ch001 10.1051/0004-6361:20053898 10.1051/0004-6361/201014949 |
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Keywords | fragmentation of neoformations computational astrophysics collision of molecular clouds parallel programming |
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SubjectTerms | Collision dynamics Compressed gas Computational grids Computer simulation Domains Evolution Gas density Interstellar chemistry Interstellar gas Interstellar matter Mathematics Mathematics and Statistics Molecular clouds Optimization Protostars Simulation Star & galaxy formation Star clusters Star formation |
Title | Simulation of Molecular Cloud Collision Dynamics Using Heterogeneous Systems |
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