When Particle Shifting is Expected to Improve Convergence of Lagrangian Smoothed Particle Hydrodynamics
| First Authors | Lennart Beck |
|---|---|
| Authors | Lennart Beck, Ivo F. Sbalzarini |
| Corresponding Authors | Lennart Beck |
| Last Authors | Ivo F. Sbalzarini |
| Conference Proceedings Volume Title | Proc. International SPHERIC Workshop |
| Series Title | |
| Conference Name | SPHERIC |
| Conference Location | Berlin, Germany |
| Conference Start Date | |
| Conference End Date | |
| Chapter Number | |
| Publisher | SPHERIC |
| Conference Proceedings Editors | |
| ISBN | 978-3-00-079208-3 |
| First Page | 289 |
| Last Page | 296 |
| Open Access | false |
| Print Publication Date | 2024-01-01 |
| Online Publication Date | |
| Abstract | We introduce a metric to determine when particle shifting is expected to improve the convergence of weakly compressible Lagrangian SPH. Shifting regularizes particle positions by biasing them toward a more homogeneous distribution. However, shifting also introduces an additional discretization error. To quantify these two opposing effects, we analyze the two- dimensional Taylor-Green case and show that particle shifting is advantageous when there is strong-enough distortion in the particle distribution. We propose a dimensionless metric of particle distortion to predict this break-even point, which we show to behave qualitatively similar across simulation cases. Since the proposed metric can be computed in a running simulation, it can be used to control the onset of shifting. |
Beck_2024_8795.pdf
(827 kB)
|
|
| Cover Image | |
| Affiliated With | Sbalzarini |
| Selected By | |
| Acknowledged Services | |
| Publication Status | Published |
| Edoc Link | |
| Sfx Link | |
| DOI | |
| PubMed ID | |
| WebOfScience Link | |
| Alternative Full Text URL | |
| Display Publisher Download Only | false |
| Visible On MPI-CBG Website | true |
| PDF Downloadable | true |
| Created By | sbalzari |
| Added Date | 2024-09-16 |
| Last Edited By | sbalzari |
| Last Edited Date | 2024-09-16 15:29:08.668 |
| Library ID | 8795 |
| Document ID | |
| Entry Complete | false |
| eDoc Compliant | false |
| Include in Edoc Report | false |
| In Pure | false |
| Ready for eDoc Export | false |
| Author Affiliations Complete | false |
| Project Name | |
| Project URL | |
| Grant ID | |
| Funding Programme | |
| Funding Organisation |