Numerical study of transient one-dimensional diffusion employing the Fractional Calculus

Authors

  • Jaque Willian Scotton Universidade Federal do Rio Grande
  • Julian Moises Sejje Suarez Instituto de Matemática, Estatística e Física, Universidade Federal do Rio Grande
  • Antonio Gledson Oliveira Goulart Instituto de Matemática, Estatística e Física, Universidade Federal do Rio Grande

DOI:

https://doi.org/10.5335/rbca.v12i1.10067

Keywords:

Numerical simulation, One-dimensional diffusion, Fractional derivatives, Riemann-Liouville, Finite Differences

Abstract

In this paper we present the results obtained in numerical simulations of the transient one-dimensional diffusion problem of a passive scalar where, unlike the traditional approaches, we employ a fractional space and time version of the governing equation of the problem. In the study, the Riemann-Liouville fractional derivatives were considered and the problem was solved by the Finite Difference Method, in order to verify how the solution profiles are influenced by the orders of the derivatives. Among the obtained results, we verified significant changes in the concentration profiles for different values of the order of derivatives, 0 < α < 1, showing the great potential of the fractional models in the modeling of problems in which the classical models are not able to represent as accurately as needed.

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Published

2020-03-21

Issue

Section

Original Paper

How to Cite

[1]
2020. Numerical study of transient one-dimensional diffusion employing the Fractional Calculus. Brazilian Journal of Applied Computing. 12, 1 (Mar. 2020), 95–103. DOI:https://doi.org/10.5335/rbca.v12i1.10067.