dorsal/arxiv
View SchemaHybrid Particle-Fluid Modeling of Plasmas
| Authors | A. E. Schulz, A. D. Greenwood, K. L. Cartwright, P. J. Mardahl |
|---|---|
| Categories | |
| ArXiv ID | physics/0402045 |
| URL | https://arxiv.org/abs/physics/0402045 |
Abstract
There are many interesting physical processes which involve the generation of high density plasmas in large volumes. However, when modeling these systems numerically, the large densities and volumes present a significant computational challenge. One technique for modeling plasma physics, the particle in cell (PIC) approach, is very accurate but requires increasing computation time and numerical resolution as the density of the plasma grows. In this paper we present a new technique for mitigating the extreme computational load as the plasma density grows by combining existing PIC methods with a dielectric fluid approach. By using both descriptions in a hybrid particle-fluid model, we now can probe the physics in large volume, high density regions. The hybrid method also provides a smooth transition as the plasma density increases and the ionization fraction grows to values that are well described by the fluid description alone. We present the hybrid technique and demonstrate the validity of the physical model by benchmarking against a simple example with an analytic solution.
{
"annotation_id": "4bc1af37-914e-43e4-9fbf-6d843c4ec842",
"date_created": "2026-03-02T18:00:49.590000Z",
"date_modified": "2026-03-02T18:00:49.590000Z",
"file_hash": "aff5336602f478e2dc0b5f15e6a982441ff90688b3f0547401ea38486ada8cdd",
"private": false,
"record": {
"abstract": "There are many interesting physical processes which involve the generation of\nhigh density plasmas in large volumes. However, when modeling these systems\nnumerically, the large densities and volumes present a significant\ncomputational challenge. One technique for modeling plasma physics, the\nparticle in cell (PIC) approach, is very accurate but requires increasing\ncomputation time and numerical resolution as the density of the plasma grows.\nIn this paper we present a new technique for mitigating the extreme\ncomputational load as the plasma density grows by combining existing PIC\nmethods with a dielectric fluid approach. By using both descriptions in a\nhybrid particle-fluid model, we now can probe the physics in large volume, high\ndensity regions. The hybrid method also provides a smooth transition as the\nplasma density increases and the ionization fraction grows to values that are\nwell described by the fluid description alone. We present the hybrid technique\nand demonstrate the validity of the physical model by benchmarking against a\nsimple example with an analytic solution.",
"arxiv_id": "physics/0402045",
"authors": [
"A. E. Schulz",
"A. D. Greenwood",
"K. L. Cartwright",
"P. J. Mardahl"
],
"categories": [
"physics.comp-ph",
"physics.plasm-ph"
],
"title": "Hybrid Particle-Fluid Modeling of Plasmas",
"url": "https://arxiv.org/abs/physics/0402045"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "50969b40-bd3f-45da-b62a-b3f91bde987e",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}