Steady-state inhomogeneous diffusion with generalized oblique boundary conditions
We consider the elliptic diffusion (steady-state heat conduction) equation with spacedependent conductivity and inhomogeneous source subject to a generalized oblique boundary condition on a part of the boundary and Dirichlet or Neumann boundary conditions on the remaining part. The oblique boundary...
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| Published in | ESAIM. Mathematical modelling and numerical analysis Vol. 57; no. 5; pp. 2701 - 2733 |
|---|---|
| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Les Ulis
EDP Sciences
14.09.2023
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| Subjects | |
| Online Access | Get full text |
| ISSN | 2822-7840 2804-7214 1290-3841 |
| DOI | 10.1051/m2an/2023063 |
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| Abstract | We consider the elliptic diffusion (steady-state heat conduction) equation with spacedependent conductivity and inhomogeneous source subject to a generalized oblique boundary condition on a part of the boundary and Dirichlet or Neumann boundary conditions on the remaining part. The oblique boundary condition represents a linear combination between the dependent variable and its normal and tangential derivatives at the boundary. We first prove the well-posedness of the continuous problems. We then develop new finite volume schemes for these problems and prove rigorously the stability and convergence of these schemes.We also address an application to the inverse corrosion problem concerning the reconstruction of the coefficients present in the generalized oblique boundary condition that is prescribed over a portion Γ
0
of the boundary
∂
Ω from Cauchy data on the complementary portion Γ
1
= ∂Ω\Γ
0
. |
|---|---|
| AbstractList | We consider the elliptic diffusion (steady-state heat conduction) equation with spacedependent conductivity and inhomogeneous source subject to a generalized oblique boundary condition on a part of the boundary and Dirichlet or Neumann boundary conditions on the remaining part. The oblique boundary condition represents a linear combination between the dependent variable and its normal and tangential derivatives at the boundary. We first prove the well-posedness of the continuous problems. We then develop new finite volume schemes for these problems and prove rigorously the stability and convergence of these schemes.We also address an application to the inverse corrosion problem concerning the reconstruction of the coefficients present in the generalized oblique boundary condition that is prescribed over a portion Γ
0
of the boundary
∂
Ω from Cauchy data on the complementary portion Γ
1
= ∂Ω\Γ
0
. We consider the elliptic diffusion (steady-state heat conduction) equation with spacedependent conductivity and inhomogeneous source subject to a generalized oblique boundary condition on a part of the boundary and Dirichlet or Neumann boundary conditions on the remaining part. The oblique boundary condition represents a linear combination between the dependent variable and its normal and tangential derivatives at the boundary. We first prove the well-posedness of the continuous problems. We then develop new finite volume schemes for these problems and prove rigorously the stability and convergence of these schemes.We also address an application to the inverse corrosion problem concerning the reconstruction of the coefficients present in the generalized oblique boundary condition that is prescribed over a portion Γ0 of the boundary ∂Ω from Cauchy data on the complementary portion Γ1 = ∂Ω\Γ0. |
| Author | Lesnic, Daniel Bradji, Abdallah |
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| Snippet | We consider the elliptic diffusion (steady-state heat conduction) equation with spacedependent conductivity and inhomogeneous source subject to a generalized... |
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| SubjectTerms | Applied mathematics Boundary conditions Conduction heating Conductive heat transfer Corrosion Dependent variables Dirichlet problem Finite volume method Hypotheses Numerical analysis Partial differential equations Steady state |
| Title | Steady-state inhomogeneous diffusion with generalized oblique boundary conditions |
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