Numerical simulation of a fractional mathematical model for epidermal wound healing
A number of mathematical models investigating certain aspects of the complicated process of wound healing are reported in the literature in recent years. However, effective numerical methods and supporting error analysis for the fractional equations which describe the process of wound healing are still limited. In this paper, we consider numerical simulation of fractional model based on the coupled advection-diffusion equations for cell and chemical concentration in a polar coordinate system. The space fractional derivatives are defined in the Left and Right Riemann-Liouville sense. Fractional orders in advection and diffusion terms belong to the intervals (0; 1) or (1; 2, respectively. Some numerical techniques will be used. Firstly, the coupled advection-diffusion equations are decoupled to a single space fractional advection-diffusion equation in a polar coordinate system. Secondly, we propose a new implicit difference method for simulating this equation by using the equivalent of the Riemann-Liouville and Grünwald-Letnikov fractional derivative de.nitions. Thirdly, its stability and convergence are discussed, respectively. Finally, some numerical results are given to demonstrate the theoretical analysis.
Riesz fractional advection-dispersion equation polar coordinate system implicit finite difference approximation scheme stability convergence.
J. Chen F. Liu K. Burrage S. Shen
School of Sciences, Jimei University, Xiamen, Fujian, China Mathematical Sciences, Queensland University of Technology, GPOBox 2434, Brisbane, Qld. 4001, Austra Mathematical Sciences, Queensland University of TechnologyGPO Box 2434, Brisbane, Qld. 4001, Austral School of Mathematical Sciences, Huaqiao University, Quanzhou, Fujian, China
国际会议
The Fifth Symposium on Fractional Differentiation and Its Applications(第五届国际自动控制联合会分数阶导数及其应用会议)
南京
英文
1-7
2012-05-14（万方平台首次上网日期，不代表论文的发表时间）