Poisson quadrature method of moments for 2D kinetic equations with velocity of constant magnitude

Autor:	Chen, Yihong, Huang, Qian, Yong, Wen-An, Zhang, Ruixi
Rok vydání:	2023
Předmět:	Physics - Computational Physics Condensed Matter - Soft Condensed Matter Mathematics - Numerical Analysis 35F50 35Q82 82-10
Druh dokumentu:	Working Paper
Popis:	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. Comment: 30 pages, 12 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2308.10083 Zobrazit plný text záznamu View this record from Arxiv