scholarly journals Anisotropic mesh adaptation for finite element solution of Anisotropic Porous Medium Equation

2018 ◽  
Vol 75 (6) ◽  
pp. 2086-2099 ◽  
Author(s):  
Xianping Li
Keyword(s):  
Finite Element ◽  
Porous Medium ◽  
Porous Medium Equation ◽  
Mesh Adaptation ◽  
Element Solution ◽  
Anisotropic Mesh ◽  
Medium Equation ◽  
Anisotropic Mesh Adaptation ◽  
Anisotropic Porous Medium Equation ◽  
Anisotropic Porous Medium

scholarly journals High order optimal anisotropic mesh adaptation using hierarchical elements

2012 ◽  
Author(s):  
R. Bois ◽  
M Fortin ◽  
A. Fortin ◽  
A Couët
Keyword(s):  
Finite Element ◽  
Mesh Adaptation ◽  
Finite Element Solution ◽  
Element Solution ◽  
Anisotropic Mesh ◽  
Anisotropic Meshes ◽  
The Past ◽  
Discretisation Error ◽  
Anisotropic Mesh Adaptation ◽  
Lagrange Finite Element

Anisotropic mesh adaptation has made spectacular progress in the past few years. The introduction of the notion of a metric, directly linked to the interpolation error, has allowed to control the elongation of elements as well as the discretisation error. This approach is however essentially restricted to linear (P(1)) finite element solutions, though there exists some generalisations. A completely general approach leading to optimal meshes and this, for finite element solution of any degree, is still missing. This is precisely the goal of this work where we show how to estimate the error on a finite element solution of degree k using hierarchical basis for Lagrange finite element polynomials. We then show how to use this information to produce optimal anisotropic meshes in a sense that will be precised.

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