Error estimation of numerical solutions of linear convection-diffusion problem

We present a new error estimating method of numerical solutions using the sensitivity analysis and modified equation techniques. The method can investigate not only the effects of numerical error but also those of uncertainty in a physical model at the same time. In this paper, we apply it to the fi...

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Published in:International journal of computational fluid dynamics 2005-01, Vol.19 (1), p.61-66
Main Authors: Tanaka, Nobuatsu, Motoyama, Yasunori
Format: Article
Language:English
Subjects:
Convection-diffusion problem
Error estimation
Lax-Wendroff scheme
Sensitivity analysis
Upwind scheme
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description We present a new error estimating method of numerical solutions using the sensitivity analysis and modified equation techniques. The method can investigate not only the effects of numerical error but also those of uncertainty in a physical model at the same time. In this paper, we apply it to the finite-difference method of upwind and Lax-Wendroff schemes for the linear convection-diffusion problems. If a standard case of typical parameters is computed with the method, no additional computation is required to estimate the other numerical parameters' results such as more detailed solutions. Furthermore, we can quantitatively estimate the numerical error only from the sensitivity analysis results.
doi_str_mv 10.1080/10618560412331286346
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1029-0257
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source Taylor and Francis Science and Technology Collection
subjects Convection-diffusion problem
Error estimation
Lax-Wendroff scheme
Sensitivity analysis
Upwind scheme
title Error estimation of numerical solutions of linear convection-diffusion problem
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