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2020 | OriginalPaper | Buchkapitel

Identification of a Time-Dependent Right-Hand Side of an Unsteady Equation with a Fractional Power of an Elliptic Operator

verfasst von : Petr N. Vabishchevich

Erschienen in: Large-Scale Scientific Computing

Verlag: Springer International Publishing

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Abstract

An inverse problem of identifying the right-hand side is considered for an unsteady equation with a fractional power of the elliptic operator. We consider the case when the time-dependent right-hand side is unknown. The redefinition (additional information) is associated with the known solution at an internal point (points) of the computational domain. The computational algorithm is based on a special decomposition of the solution of the unsteady problem during a transition from the previous time level to the next one. The related auxiliary problems are direct boundary value problems for stationary equations with fractional powers of elliptic operators. Some features of the proposed computational algorithm are demonstrated by the results of numerical experiments for a model 2D inverse problem.

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Metadaten
Titel
Identification of a Time-Dependent Right-Hand Side of an Unsteady Equation with a Fractional Power of an Elliptic Operator
verfasst von
Petr N. Vabishchevich
Copyright-Jahr
2020
DOI
https://doi.org/10.1007/978-3-030-41032-2_11