{
  "abstract": "A species-specific weighting scheme for the Natural-Sample-Size collision model within the Direct Simulation Monte Carlo method is developed and implemented in the open-source gas and plasma solver PICLas. The implemented weighting scheme places particular emphasis on chemical reactions and ionization processes of trace species in order to guarantee physically accurate and low-noise simulations of atmospheric entry processes. The successful implementation and the conservation of momentum and energy during relaxation processes and chemical reactions are verified through a reservoir simulation of a reacting air mixture. As a more sophisticated validation case, atmospheric entry simulations of a cylinder at an altitude of 108 km are investigated. In a final step, the developed weighting scheme is employed to investigate ionization processes in the shock layer surrounding the RAM-C II reentry probe during atmospheric entry. The simulations showed very good agreement with experimental flight data and reduced noise in the rarefied regions for the charged species.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.25073",
  "author_total": 4,
  "authors": [
    {
      "name": "Simone Lauterbach"
    },
    {
      "name": "Kim-Sophie Ellenberger"
    },
    {
      "name": "Stefanos Fasoulas"
    },
    {
      "name": "Marcel Pfeiffer"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/89k26qrvm13nh.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.25073",
  "fulltext_url": null,
  "id": "89k26qrvm13nh",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.25073",
  "language": null,
  "licence": "CC-BY-NC-SA-4.0",
  "licence_label": "CC BY-NC-SA 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.flu-dyn"
    ],
    [
      "arxiv",
      "physics.plasm-ph"
    ],
    [
      "openalex",
      "2604|Gas Dynamics and Kinetic Theory"
    ]
  ],
  "openalex": "W7214120130",
  "pdf_url": "https://arxiv.org/pdf/2609.25073",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-18",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/89k26qrvm13nh.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:39Z",
      "native_id": "2609.25073",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.25073"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.flu-dyn",
      "subfield": "fluid-dynamics"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.plasm-ph",
      "subfield": "plasma"
    }
  ],
  "title": "Reactive Trace Species Modeling with the Simulation Tool PICLas",
  "title_text": "Reactive Trace Species Modeling with the Simulation Tool PICLas",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:39Z",
  "url": "https://research.draconitic.com/paper/89k26qrvm13nh",
  "venue": "arXiv",
  "versions": []
}