Comparison of different numerical methods for the solution of the time-fractional reaction-diffusion equation with variable diffusion coefficient

In this work we perform a comparison of two different numerical schemes for the solution of the time-fractional diffusion equation with variable diffusion coefficient and a nonlinear source term. The two methods are the implicit numerical scheme presented in [M.L. Morgado, M. Rebelo, Numerical appro...

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Detalhes bibliográficos
Autor principal: Morgado, M.L. (author)
Outros Autores: Ferrás, Luís Jorge Lima (author), Rebelo, M. (author)
Formato: conferencePaper
Idioma:eng
Publicado em: 2015
Assuntos:
Texto completo:https://hdl.handle.net/1822/39268
País:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/39268
Descrição
Resumo:In this work we perform a comparison of two different numerical schemes for the solution of the time-fractional diffusion equation with variable diffusion coefficient and a nonlinear source term. The two methods are the implicit numerical scheme presented in [M.L. Morgado, M. Rebelo, Numerical approximation of distributed order reaction- diffusion equations, Journal of Computational and Applied Mathematics 275 (2015) 216-227] that is adapted to our type of equation, and a colocation method where Chebyshev polynomials are used to reduce the fractional differential equation to a system of ordinary differential equations