The compact and Crank-Nicolson ADI schemes for two-dimensional semilinear multidelay parabolic equations

The compact and Crank-Nicolson ADI schemes for two-dimensional semilinear multidelay parabolic equations
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二维半线性多延迟抛物线方程的紧凑格式和 Crank-Nicolson ADI 格式

DOI:
10.1016/j.cam.2016.04.016
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发表时间:
2016-11
影响因子:
2.4
通讯作者:
Li Wang
Li Wang
中科院分区:
数学2区
文献类型:
--
作者:
Qifeng Zhang;Chengjian Zhang;Li Wang

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研究二维半线性多时滞抛物型方程初边值问题的数值解。提出了两种交替方向隐式(ADI)方案。分析了这些格式的唯一可解性、收敛性和无条件稳定性,从而建立了相应的判据。特别地,利用离散能量法证明了紧化ADI格式在时间上具有二阶精度,在空间上具有四阶精度,而Crank-Nicolson ADI格式在时间和空间上都具有二阶精度。数值实验验证了两种方案的有效性和准确性。
This paper deals with numerical solutions of initial–boundary value problems of the two-dimensional semilinear multidelay parabolic equations. Two types of alternating direction implicit (ADI) schemes are suggested. The unique solvability, convergence and unconditional stability of the schemes are analyzed and hence the corresponding criteria are established. Especially, by using the discrete energy method, it is proven that the compact ADI scheme can attain second-order accuracy in time and fourth-order accuracy in space, and the Crank–Nicolson ADI scheme has second order accuracy in both time and space. Numerical experiments are performed to verify the efficiency and accuracy of the both schemes.
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