A Remark on the Courant-Friedrichs-Lewy Condition in Finite Difference Approach to PDE's

A Remark on the Courant-Friedrichs-Lewy Condition in Finite Difference Approach to PDE's

Year:    2014

Author:    Kosuke Abe, Nobuyuki Higashimori, Masayoshi Kubo, Hiroshi Fujiwara, Yuusuke Iso

Advances in Applied Mathematics and Mechanics, Vol. 6 (2014), Iss. 5 : pp. 693–698

Abstract

The Courant-Friedrichs-Lewy condition (The CFL condition) is appeared in the analysis of the finite difference method applied to linear hyperbolic partial differential equations. We give a remark on the CFL condition from a view point of stability, and we give some numerical experiments which show instability of numerical solutions even under the CFL condition. We give a mathematical model for rounding errors in order to explain the instability.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/aamm.2014.5.s6

Advances in Applied Mathematics and Mechanics, Vol. 6 (2014), Iss. 5 : pp. 693–698

Published online:    2014-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    6

Keywords:    Numerical analysis finite difference scheme stability CFL condition.

Author Details

Kosuke Abe

Nobuyuki Higashimori

Masayoshi Kubo

Hiroshi Fujiwara

Yuusuke Iso

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