首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Analysis of particle methods for structured population models with nonlocal boundary term in the framework of bounded Lipschitz distance
Authors:Piotr Gwiazda  Jędrzej Jabłoński  Anna Marciniak‐Czochra  Agnieszka Ulikowska
Institution:1. Institute of Applied Mathematics and Mechanics, University of Warsaw, , Warszawa, 02‐097 Poland;2. Institute of Applied Mathematics, Interdisciplinary Center for Scientific Computing (IWR) and Bioquant, University of Heidelberg, , 69120 Heidelberg, Germany
Abstract:Recently developed theoretical framework for analysis of structured population dynamics in the spaces of nonnegative Radon measures with a suitable metric provides a rigorous tool to study numerical schemes based on particle methods. The approach is based on the idea of tracing growth and transport of measures which approximate the solution of original partial differential equation. In this article, we present analytical and numerical study of two versions of Escalator Boxcar Train algorithm which has been widely applied in theoretical biology, and compare it to the recently developed split‐up algorithm. The novelty of this article is in showing well‐posedness and convergence rates of the schemes using the concept of semiflows on metric spaces. Theoretical results are validated by numerical simulations of test cases, in which distances between simulated and exact solutions are computed using flat metric. © 2014 Wiley Periodicals, Inc. Numer Methods Partial Differential Eq 30: 1797–1820, 2014
Keywords:bounded Lipschitz distance  Escalator Boxcar Train  flat metric  measure‐valued solutions  particle method  positive Radon measures  structured population model
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号