arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1202.1005math.NAcs.NA
收藏

非线性反应扩散系统的一种ADI外推Crank-Nicolson正交样条配置方法:计算研究

An ADI extrapolated Crank-Nicolson orthogonal spline collocation method for nonlinear reaction-diffusion systems: a computational study

The Petroleum Institute(石油学院);American Mathematical Society(美国数学会)

Ryan I. Fernandes, Graeme Fairweather

AI总结:

提出一种基于外推Crank-Nicolson正交样条配置的交替方向隐式方法,用于求解非线性反应扩散系统,在Brusselator、Gray-Scott、Gierer-Meinhardt和Schnakenberg模型上验证了其高效性和最优全局精度。

摘要:

描述了一种交替方向隐式(ADI)正交样条配置(OSC)方法,用于求解一类非线性反应扩散系统的近似解。通过在著名的Brusselator、Gray-Scott、Gierer-Meinhardt和Schnakenberg模型上的求解,证明了其有效性,并与文献中考虑的其他数值技术进行了比较。这种新的ADI方法基于外推Crank-Nicolson OSC方法,且是代数线性的。它高效,每个时间层仅需$O({\cal N})$次操作,其中${\cal N}$是未知量个数。此外,它产生的近似解在各种范数下具有最优全局精度,并具有超收敛性质。

英文摘要:

An alternating direction implicit (ADI) orthogonal spline collocation (OSC) method is described for the approximate solution of a class of nonlinear reaction-diffusion systems. Its efficacy is demonstrated on the solution of well-known examples of such systems, specifically the Brusselator, Gray-Scott, Gierer-Meinhardt and Schnakenberg models, and comparisons are made with other numerical techniques considered in the literature. The new ADI method is based on an extrapolated Crank-Nicolson OSC method and is algebraically linear. It is efficient, requiring at each time level only $O({\cal N})$ operations where ${\cal N}$ is the number of unknowns. Moreover,it is shown to produce approximations which are of optimal global accuracy in various norms, and to possess superconvergence properties.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑