Analysis of finite element methods for vector Laplacians on surfaces
By Peter Hansbo, Mats G. Larson, Karl Larsson. IMA Journal of Numerical Analysis, 2016
56 citations recorded by the source corpus.
We develop a finite element method for the vector Laplacian based on the covariant derivative of tangential vector fields on surfaces embedded in ${\mathbb{R}}^3$. Closely related operators arise in models of flow on surfaces as well as elastic membranes and shells. The method is based on standard continuous parametric Lagrange elements that describe a ${\mathbb{R}}^3$ vector field on the surface, and the tangent condition is weakly enforced using a penalization term. We derive error estimates that take into account the approximation of both the geometry of the surface and the solution to the partial differential equation. In particular, we note that to achieve optimal order error estimates, in both energy and $L^2$ norms, the normal approximation used in the penalization term must be of the same order as the approximation of the solution. This can be fulfilled either by using an improved normal in the penalization term, or by increasing the order of the geometry approximation. We also present numerical results using higher-order finite elements that verify our theoretical findings.
Subfields: Computational Mechanics, Computational Theory and Mathematics, Numerical Analysis
View Paper: https://www.semanticscholar.org/paper/f8f4c9ccf7cc96a0dd058e3701fd2cc6904e048d
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In Computational Mechanics
In Computational Theory and Mathematics
In Numerical Analysis
Citations in the corpus
- Modelling fluid deformable surfaces with an emphasis on biological interfaces (2018, background): “Paralleling the various mathematical descriptions of fluid interfaces discussed above, different computational approaches have been proposed in recent years, either based on the Cartesian approach for fixed or time-evolving surfaces (Rodrigues et al. 2015; Barrett et al. 2015, 2016; Hansbo et al. 20”
- Stream function formulation of surface Stokes equations (2018, background): “, the review paper [13] for scalar surface PDEs and [21, 36, 37, 29, 30, 38] for surface (Navier-)Stokes equations.”