@Article{EAJAM-9-538, author = {Jianfei Huang, Sadia Arshad, Yandong Jiao and YifaTang}, title = {Convolution Quadrature Methods for Time-Space Fractional Nonlinear Diffusion-Wave Equations}, journal = {East Asian Journal on Applied Mathematics}, year = {2019}, volume = {9}, number = {3}, pages = {538--557}, abstract = {
Two second-order convolution quadrature methods for fractional nonlinear diffusion-wave equations with Caputo derivative in time and Riesz derivative in space are constructed. To improve the numerical stability, the fractional diffusion-wave equations are firstly transformed into equivalent partial integro-differential equations. Then, a second-order convolution quadrature is applied to approximate the Riemann-Liouville integral. This deduced convolution quadrature method can handle solutions with low regularity in time. In addition, another second-order convolution quadrature method based on a new second-order approximation for discretising the Riemann-Liouville integral at time $t$$k$−1/2 is constructed. This method reduces computational complexity if Crank-Nicolson technique is used. The stability and convergence of the methods are rigorously proved. Numerical experiments support the theoretical results.
}, issn = {2079-7370}, doi = {https://doi.org/10.4208/eajam.230718.131018 }, url = {http://global-sci.org/intro/article_detail/eajam/13166.html} }