Isosurface box remeshing

Author: Vicente Mataix Ferrándiz

Kratos version: 7.1

Source files: Box

Case Specification

In this test case we want to remesh anisotropically the geometry of two boxes which represent buildings.

The following applications of Kratos are used:

• MeshingApplication with the MMG module

The problem corresponds with the figures:

The challenge consists in meshing anisotropically the geometry using as error measure the gradient of the distance. The initial mesh has a large number of elements, we want to reduce them. Additionally the remesher will consider the isosurface and we will remove the elements with a negative distance.

Results

The results obtained after remeshing can be see in the following figure:

In detail the empty region:

References

Frédéric Alauzet. Metric-Based Anisotropic Mesh Adaptation. Course material, CEA-EDF-INRIA Schools. Numerical Analysis Summer School. https://www.rocq.inria.fr/gamma/Frederic.Alauzet/cours/cirm.pdf

Pascal Tremblay 2-D, 3-D and 4-D Anisotropic Mesh Adaptation for the Time-Continuous Space-Time Finite Element Method with Applications to the Incompressible Navier-Stokes Equations. PhD thesis Ottawa-Carleton Institute for Mechanical and Aerospace Engineering, Department of Mechanical Engineering, University of Ottawa. 2007. http://aix1.uottawa.ca/~ybourg/thesis/PhDThesis_Pascal_Tremblay_Final.pdf