An approximately consistent SPH simulation approach with variable particle resolution for engineering applications

Publikationstyp
Journal Article
Date Issued
2019-09
Sprache
English
Author(s)
Leonardi, Marzia  
Domínguez, José M.  
Rung, Thomas  orcid-logo
Institut
Fluiddynamik und Schiffstheorie M-8  
TORE-URI
http://hdl.handle.net/11420/2902
Journal
Engineering analysis with boundary elements  
Volume
106
Start Page
555
End Page
570
Citation
Engineering Analysis with Boundary Elements (106): 555-570 (2019-09)
Publisher DOI
10.1016/j.enganabound.2019.06.001
Scopus ID
2-s2.0-85067856531
This paper focuses on consistency issues caused by truncated kernels and irregular particle distributions in Smoothed-Particle-Hydrodynamics (SPH). The analysis starts from the kernel-based approximations inherent to the SPH method. An explicit kernel correction is proposed, which approximately achieves first-order consistency. The suggested approach is additionally combined with a Eulerian variable resolution approach, which conserves the number of particles but changes the individual particle mass in a transit regime. Validation studies featuring fully wetted and free-surface flow configurations are employed to assess the benefits of the combined approach. Results indicate benefits of the kernel correction and display merits and drawbacks of the variable resolution approach.