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Dynamic mesh optimization based on the spring analogy

: Schmidt, J.; Stoevesandt, B.


Medjroubi, W.:
1st Symposium on OpenFOAM® in Wind Energy 2013 : Oldenburg, Germany, 20 - 21 March 2013
Red Hook, NY: Curran, 2014 (ITM web of conferences 2)
ISBN: 978-1-63266-280-4
Art. 03001, 9 pp.
Symposium on OpenFOAM in Wind Energy <1, 2013, Oldenburg>
Conference Paper
Fraunhofer IWES ()

We present an implementation of the spring analogy for three dimensional meshes in OpenFOAM. All parameters of the spring system are treated as fields that can either be pre-defined by the user, or updated at each time step according to specified geometrical regions or diffusion equations. The purpose of the method is to provide a pre-processing tool for mesh optimization. We study three simple test cases, a deformed block, an airfoil and a hill, and we analyze the evolution of skewness, non-orthogonality and aspect ratio during the approach of dynamic equilibrium.