Acta mathematica scientia,Series B ›› 2018, Vol. 38 ›› Issue (6): 1689-1711.

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ALTERNATING DIRECTION IMPLICIT OSC SCHEME FOR THE TWO-DIMENSIONAL FRACTIONAL EVOLUTION EQUATION WITH A WEAKLY SINGULAR KERNEL

Haixiang ZHANG1,2, Xuehua YANG1,2, Da XU3   

  1. 1 Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, P. O. Box 8009, Beijing 100088, China;
    2 School of Science, Hunan University of Technology, Zhuzhou 412007, China;
    3 Department of Mathematics, Hunan Normal University, Changsha 410081, China
  • Received:2017-08-31 Revised:2018-03-06 Online:2018-12-25 Published:2018-12-28
  • Contact: Xuehua YANG E-mail:hunanshidayang@163.com
  • Supported by:
    This research was supported by National Nature Science Foundation of China (11701168, 11601144 and 11626096), Hunan Provincial Natural Science Foundation of China (2018JJ3108, 2018JJ3109 and 2018JJ4062), Scientific Research Fund of Hunan Provincial Education Department (16K026 and YB2016B033), and China Postdoctoral Science Foundation (2018M631403).

Abstract: In this paper, a new kind of alternating direction implicit (ADI) Crank-Nicolson-type orthogonal spline collocation (OSC) method is formulated for the two-dimensional fractional evolution equation with a weakly singular kernel arising in the theory of linear viscoelasticity. The novel OSC method is used for the spatial discretization, and ADI Crank-Nicolson-type method combined with the second order fractional quadrature rule are considered for the temporal component. The stability of proposed scheme is rigourously established, and nearly optimal order error estimate is also derived. Numerical experiments are conducted to support the predicted convergence rates and also exhibit expected super-convergence phenomena.

Key words: fractional equation, orthogonal spline collocation scheme, alternating direction implicit, stability, convergence

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