Particle distribution method for the homologous collapse of a sphere
In this work the adiabatic collapse of a sphere is studied. self-gravitating through a computational simulationcarried out with Gadget-2. This package has a simulation archetype for the homologous collapse of a unitsphere, which is represented by a series of concentric spherical shells, where the pa...
| Main Authors: | , , , |
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| Format: | Online |
| Language: | spa |
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Universidad Pedagógica y Tecnológica de Colombia
2022
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| Subjects: | |
| Online Access: | https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/15224 |
| _version_ | 1801706357355708416 |
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| author | García Ospina, Joe Alejandro Poveda Tejada, Nicanor Gómez Aponte, Juan David Vera Villamizar, Nelson |
| author_facet | García Ospina, Joe Alejandro Poveda Tejada, Nicanor Gómez Aponte, Juan David Vera Villamizar, Nelson |
| author_sort | García Ospina, Joe Alejandro |
| collection | OJS |
| description | In this work the adiabatic collapse of a sphere is studied. self-gravitating through a computational simulationcarried out with Gadget-2. This package has a simulation archetype for the homologous collapse of a unitsphere, which is represented by a series of concentric spherical shells, where the particles are equidistantlydistributed to represent a density ρ ~ r2. Another method has been created based on considering the unitsphere made up of small spheres inside. The problem comes down to packing the small spheres in the bestpossible way. This problem has been solved in solid state physics. For spherical symmetry, the maximumpacking factor is given by an FCC-type Bravais structure. In this work it is shown that the Gadget archetypeis equivalent to a CS structure that has a smaller packing factor. Consequently, the best way to represent agas sphere computationally is by means of an FCC distribution. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-15224 |
| institution | Revista Ciencia en Desarrollo |
| language | spa |
| publishDate | 2022 |
| publisher | Universidad Pedagógica y Tecnológica de Colombia |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-152242023-03-06T15:47:03Z Particle distribution method for the homologous collapse of a sphere Método de distribución de partículas para el colapso homólogo de una esfera García Ospina, Joe Alejandro Poveda Tejada, Nicanor Gómez Aponte, Juan David Vera Villamizar, Nelson Colapso homologo Nube molescular Gadget-2 Homologous collapse Molecular cloud Gadget-2 In this work the adiabatic collapse of a sphere is studied. self-gravitating through a computational simulationcarried out with Gadget-2. This package has a simulation archetype for the homologous collapse of a unitsphere, which is represented by a series of concentric spherical shells, where the particles are equidistantlydistributed to represent a density ρ ~ r2. Another method has been created based on considering the unitsphere made up of small spheres inside. The problem comes down to packing the small spheres in the bestpossible way. This problem has been solved in solid state physics. For spherical symmetry, the maximumpacking factor is given by an FCC-type Bravais structure. In this work it is shown that the Gadget archetypeis equivalent to a CS structure that has a smaller packing factor. Consequently, the best way to represent agas sphere computationally is by means of an FCC distribution. En este trabajo se estudia el colapso adiabático de una esfera autogravitante mediante una simulacióncomputacional realizada con Gadget-2. Este paquete tiene un arquetipo de simulación para el colapsohomólogo de una esfera unidad, la cual se representa mediante una serie de cascarones esféricosconcéntricos, en donde se distribuyen las partículas de manera equidistante para representar una densidadρ ~ r2. Se ha creado otro método basado en considerar la esfera unidad constituida por pequeñas esferasen su interior. El problema se reduce a empaquetar las esferas pequeñas de la mejor manera posible.Este problema ha sido resuelto en física estado sólido. Para la simetría esférica el máximo factor deempaquetamiento lo da una estructura de Bravais tipo FCC. En este trabajo se demuestra que el arquetipo deGadget es equivalente a una estructura CS que tiene un factor de empaquetamiento menor. En consecuencia,la mejor manera de representar una esfera de gas computacionalmente es mediante una distribución FCC. Universidad Pedagógica y Tecnológica de Colombia 2022-12-12 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/15224 10.19053/01217488.v14.n2.2023.15224 Ciencia En Desarrollo; Vol. 1 No. 2E (2022): Núm. 2E (2022): Número Especial: VII Congreso de Astronomía y Astrofísica 2022; 47-53 Ciencia en Desarrollo; Vol. 1 Núm. 2E (2022): Núm. 2E (2022): Número Especial: VII Congreso de Astronomía y Astrofísica 2022; 47-53 2462-7658 0121-7488 spa https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/15224/12662 |
| spellingShingle | Colapso homologo Nube molescular Gadget-2 Homologous collapse Molecular cloud Gadget-2 García Ospina, Joe Alejandro Poveda Tejada, Nicanor Gómez Aponte, Juan David Vera Villamizar, Nelson Particle distribution method for the homologous collapse of a sphere |
| title | Particle distribution method for the homologous collapse of a sphere |
| title_alt | Método de distribución de partículas para el colapso homólogo de una esfera |
| title_full | Particle distribution method for the homologous collapse of a sphere |
| title_fullStr | Particle distribution method for the homologous collapse of a sphere |
| title_full_unstemmed | Particle distribution method for the homologous collapse of a sphere |
| title_short | Particle distribution method for the homologous collapse of a sphere |
| title_sort | particle distribution method for the homologous collapse of a sphere |
| topic | Colapso homologo Nube molescular Gadget-2 Homologous collapse Molecular cloud Gadget-2 |
| topic_facet | Colapso homologo Nube molescular Gadget-2 Homologous collapse Molecular cloud Gadget-2 |
| url | https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/15224 |
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