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Influence of particle disorder and smoothing length on SPH operator accuracy

Influence of particle disorder and smoothing length on SPH operator accuracy
Tagung:

10th International SPHERIC Workshop

Links:DOI
Tagungsort:

Parma, Italien

Datum:

16.06.2015 - 18.06.2015

Autoren:

Chaussonnet, Geoffroy
Braun, Samuel
Wieth, Lars
Koch, Rainer
Bauer, H.-J.

SPH consistency and different expression of SPH operators (gradient and Laplacian) accuracy are numerically investigated with regards to particle disorder and smoothing length on different particle distributions (2D and 3D Cartesian and 2D triangular). It is observed that particle disorder deteriorates SPH consistency and adds to the operators a diverging dependency on the smoothing length. Numerical tests evaluate the accuracy of the different operators on perturbed lattices, allowing to establish a rank in terms of robustness against particle disorder.