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http://hdl.handle.net/11701/19410
Полная запись метаданных
Поле DC | Значение | Язык |
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dc.contributor.author | Gorikhovskii, Viacheslav I. | - |
dc.contributor.author | Nagnibeda, Ekaterina A. | - |
dc.date.accessioned | 2020-09-11T09:23:57Z | - |
dc.date.available | 2020-09-11T09:23:57Z | - |
dc.date.issued | 2020-09 | - |
dc.identifier.citation | Gorikhovsky V. I., Nagnibeda E. A. Optimization of CO2 vibrational kinetics modeling in the full state-to-state approach. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2020, vol. 7 (65), issue 3, pp. 527–538. | en_GB |
dc.identifier.other | https://doi.org/10.21638/spbu01.2020.315 | - |
dc.identifier.uri | http://hdl.handle.net/11701/19410 | - |
dc.description.abstract | Numerical modeling of nonequilibrium state-to-state carbon dioxide kinetics is a challenging time-consuming computational task that involves solving a huge system of stiff differential equations and requires optimized methods to solve it. In the present study, we propose and investigate optimizations for the extended backward differential formula (EBDF) scheme. Using adaptive timesteps instead of fixed ones reduces the number of steps in the algorithm many thousands of times, although with an increase in step complexity. The use of parallel computations to calculate relaxation terms allows one to further reduce the computation time. Numerical experiments on the modeling of spatially homogeneous carbon dioxide vibrational relaxation were performed for optimized computational schemes of different orders. Based on them, the most optimal algorithm of calculations was recommended: a parallel EBDF-scheme of fourth-order with an adaptive timestep. This method takes less computational time and memory costs and has the high stability. | en_GB |
dc.description.sponsorship | The work is supported by Russian Foundation for Basic Research (grants no. 18-01-00493, 19-31- 90059). | en_GB |
dc.language.iso | ru | en_GB |
dc.publisher | St Petersburg State University | en_GB |
dc.relation.ispartofseries | Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 7 (65); Issue 3 | - |
dc.subject | vibrational kinetics | en_GB |
dc.subject | carbon dioxide | en_GB |
dc.subject | parallel algorithms | en_GB |
dc.subject | state-to-state approach | en_GB |
dc.subject | optimization of numerical calculations | en_GB |
dc.title | Optimization of CO2 vibrational kinetics modeling in the full state-to-state approach | en_GB |
dc.type | Article | en_GB |
Располагается в коллекциях: | Issue 3 |
Файлы этого ресурса:
Файл | Описание | Размер | Формат | |
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527-538.pdf | 802,91 kB | Adobe PDF | Просмотреть/Открыть |
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