arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1102.0493math.AP
收藏

退化对流-扩散方程的finite difference逼近的误差估计

An error estimate for the finite difference approximation to degenerate convection -diffusion equations

K. H. Karlsen, U. Koley, N. H. Risebro

摘要:

考虑一维非线性退化对流-扩散方程的半离散一阶差分格式,证明了一个L1误差估计。准确地说,我们表明,L1 loc之间的差异的近似解和唯一的熵解决方案收敛速度为O(\Deltax 1/11),其中\Deltax是空间网格步长。如果扩散是线性的,我们得到收敛速度O(\Deltax 1/2),关键是O与扩散的大小无关

英文摘要:

We consider semi-discrete first-order finite difference schemes for a nonlinear degenerate convection-diffusion equations in one space dimension, and prove an L1 error estimate. Precisely, we show that the L1 loc difference between the approximate solution and the unique entropy solution converges at a rate O(\Deltax 1/11), where \Deltax is the spatial mesh size. If the diffusion is linear, we get the convergence rate O(\Deltax 1/2), the point being that the O is independent of the size of the diffusion

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。

↑