A Non-Negative Least Squares-based Approach for Moment-Preserving Particle Merging
Fuente:
arXiv
Enregistré dans:
| Auteur principal: | |
|---|---|
| Format: | Preprint |
| Publié: |
2024
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866929634136817664 |
|---|---|
| author | Oblapenko, Georgii |
| author_facet | Oblapenko, Georgii |
| contents | In the present work, a novel particle merging scheme is proposed for PIC-DSMC simulations, based on the solution of a Non-negative Least Squares problem. The merging algorithm conserves arbitrary moments of the velocity distribution function, and a collision rate-conserving version of the algorithm is presented as well. Numerical simulations show excellent performance of the merging algorithm in terms of accuracy. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_12354 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A Non-Negative Least Squares-based Approach for Moment-Preserving Particle Merging Oblapenko, Georgii Plasma Physics Computational Physics In the present work, a novel particle merging scheme is proposed for PIC-DSMC simulations, based on the solution of a Non-negative Least Squares problem. The merging algorithm conserves arbitrary moments of the velocity distribution function, and a collision rate-conserving version of the algorithm is presented as well. Numerical simulations show excellent performance of the merging algorithm in terms of accuracy. |
| title | A Non-Negative Least Squares-based Approach for Moment-Preserving Particle Merging |
| topic | Plasma Physics Computational Physics |
| url | https://arxiv.org/abs/2412.12354 |