Poisson quadrature method of moments for 2D kinetic equations with velocity of constant magnitude
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866916487423328256 |
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| author | Chen, Yihong Huang, Qian Yong, Wen-An Zhang, Ruixi |
| author_facet | Chen, Yihong Huang, Qian Yong, Wen-An Zhang, Ruixi |
| contents | This work is concerned with kinetic equations with velocity of constant magnitude. We propose a quadrature method of moments based on the Poisson kernel, called Poisson-EQMOM. The derived moment closure systems are well defined for all physically relevant moments and the resultant approximations of the distribution function converge as the number of moments goes to infinity. The convergence makes our method stand out from most existing moment methods. Moreover, we devise a delicate moment inversion algorithm. As an application, the Vicsek model is studied for overdamped active particles. Then the Poisson-EQMOM is validated with a series of numerical tests including spatially homogeneous, one-dimensional and two-dimensional problems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2308_10083 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Poisson quadrature method of moments for 2D kinetic equations with velocity of constant magnitude Chen, Yihong Huang, Qian Yong, Wen-An Zhang, Ruixi Computational Physics Soft Condensed Matter Numerical Analysis 35F50, 35Q82, 82-10 This work is concerned with kinetic equations with velocity of constant magnitude. We propose a quadrature method of moments based on the Poisson kernel, called Poisson-EQMOM. The derived moment closure systems are well defined for all physically relevant moments and the resultant approximations of the distribution function converge as the number of moments goes to infinity. The convergence makes our method stand out from most existing moment methods. Moreover, we devise a delicate moment inversion algorithm. As an application, the Vicsek model is studied for overdamped active particles. Then the Poisson-EQMOM is validated with a series of numerical tests including spatially homogeneous, one-dimensional and two-dimensional problems. |
| title | Poisson quadrature method of moments for 2D kinetic equations with velocity of constant magnitude |
| topic | Computational Physics Soft Condensed Matter Numerical Analysis 35F50, 35Q82, 82-10 |
| url | https://arxiv.org/abs/2308.10083 |