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Convergence analysis of a variational quasi-reversibility approach for an inverse hyperbolic heat conduction problem
University of North Carolina.
KTH, School of Engineering Sciences (SCI), Mathematics (Dept.), Mathematical Statistics.ORCID iD: 0000-0003-3524-1288
2022 (English)In: Journal of Inverse and Ill-Posed Problems, ISSN 0928-0219, E-ISSN 1569-3945, Vol. 30, no 2, p. 251-264Article in journal (Refereed) Published
Abstract [en]

We study a time-reversed hyperbolic heat conduction problem based upon the Maxwell-Cattaneo model of non-Fourier heat law. This heat and mass diffusion problem is a hyperbolic type equation for thermodynamics systems with thermal memory or with finite time-delayed heat flux, where the Fourier or Fick law is proven to be unsuccessful with experimental data. In this work, we show that our recent variational quasi-reversibility method for the classical time-reversed heat conduction problem, which obeys the Fourier or Fick law, can be adapted to cope with this hyperbolic scenario. We establish a generic regularization scheme in the sense that we perturb both spatial operators involved in the PDE. Driven by a Carleman weight function, we exploit the natural energy method to prove the well-posedness of this regularized scheme. Moreover, we prove the Hölder rate of convergence in the mixed L2 - H1 spaces.

Place, publisher, year, edition, pages
Walter de Gruyter GmbH , 2022. Vol. 30, no 2, p. 251-264
Keywords [en]
Backward heat conduction problem, Carleman weight, energy estimates, hyperbolic equation, Hölder convergence, quasi-reversibility method, Fourier transforms, Heat flux, Inverse problems, Convergence analysis, Hyperbolic heat conduction, Quasi-reversibility, Quasi-reversibility methods, Rate of convergence, Regularization schemes, Time-reversed heat conduction, Weight functions, Heat conduction
National Category
Computational Mathematics Mathematical Analysis
Identifiers
URN: urn:nbn:se:kth:diva-285353DOI: 10.1515/jiip-2020-0023ISI: 000776290700006Scopus ID: 2-s2.0-85089755432OAI: oai:DiVA.org:kth-285353DiVA, id: diva2:1505515
Note

QC 20220422

Available from: 2020-12-01 Created: 2020-12-01 Last updated: 2022-06-25Bibliographically approved

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Dao, Manh Khang

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CiteExportLink to record
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