Error analysis of proper orthogonal decomposition data assimilation schemes with grad–div stabilization for the Navier–Stokes equations

The error analysis of a proper orthogonal decomposition (POD) data assimilation (DA) scheme for the Navier–Stokes equations is carried out. A grad–div stabilization term is added to the formulation of the POD method. Error bounds with constants independent on inverse powers of the viscosity paramete...

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Published inJournal of computational and applied mathematics Vol. 411; p. 114246
Main Authors García-Archilla, Bosco, Novo, Julia, Rubino, Samuele
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.09.2022
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Online AccessGet full text
ISSN0377-0427
1879-1778
1879-1778
DOI10.1016/j.cam.2022.114246

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Abstract The error analysis of a proper orthogonal decomposition (POD) data assimilation (DA) scheme for the Navier–Stokes equations is carried out. A grad–div stabilization term is added to the formulation of the POD method. Error bounds with constants independent on inverse powers of the viscosity parameter are derived for the POD algorithm. No upper bounds in the nudging parameter of the data assimilation method are required. Numerical experiments show that, for large values of the nudging parameter, the proposed method rapidly converges to the real solution, and greatly improves the overall accuracy of standard POD schemes up to low viscosities over predictive time intervals.
AbstractList The error analysis of a proper orthogonal decomposition (POD) data assimilation (DA) scheme for the Navier–Stokes equations is carried out. A grad–div stabilization term is added to the formulation of the POD method. Error bounds with constants independent on inverse powers of the viscosity parameter are derived for the POD algorithm. No upper bounds in the nudging parameter of the data assimilation method are required. Numerical experiments show that, for large values of the nudging parameter, the proposed method rapidly converges to the real solution, and greatly improves the overall accuracy of standard POD schemes up to low viscosities over predictive time intervals.
ArticleNumber 114246
Author Novo, Julia
García-Archilla, Bosco
Rubino, Samuele
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Keywords 65M15
76B75
Proper orthogonal decomposition
Fully discrete schemes
35Q30
Uniform-in-time error estimates
Navie–Stokes equations
65M70
65M60
65M12
Mixed finite elements methods
65M20
Data assimilation
Language English
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Snippet The error analysis of a proper orthogonal decomposition (POD) data assimilation (DA) scheme for the Navier–Stokes equations is carried out. A grad–div...
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SubjectTerms Data assimilation
Fully discrete schemes
Mixed finite elements methods
Navie–Stokes equations
Proper orthogonal decomposition
Uniform-in-time error estimates
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Title Error analysis of proper orthogonal decomposition data assimilation schemes with grad–div stabilization for the Navier–Stokes equations
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