Bunny remeshing

Author: Vicente Mataix Ferrándiz

Kratos version: 7.1

Source files: Bunny

Case Specification

In this test case,

The following applications of Kratos are used:

• MeshingApplication with the MMG module

The problem corresponds with the very known geometry of the Standford’s bunny.

The challenge consists in meshing anisotropically the geometry using as error measure the gradient of the distance, measured previously with an octree mesher (GiD). The STL file used can be found here

The mesh corresponding before remeshing corresponds with:

Results

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

The corresponding isosurface to the distance:

The distance and its gradient:

The variation of the anisotropic ratio in the same 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

The Stanford 3D Scanning Repository. http://graphics.stanford.edu/data/3Dscanrep/