{
  "abstract": "We present DeboRheo v2.0, an unstructured, geometrically unsplit Volume-of-Fluid framework implemented in OpenFOAM for viscoelastic two-phase flows. Version 2.0 improves numerical robustness when large viscosity contrasts coincide with strongly deformed interfaces and thin viscoelastic lamellae or filaments. The revised interfacial viscosity treatment retains a sharp geometric interface while regularizing the viscous contribution to the momentum equation. The solver combines mass-momentum-consistent phase advection, optional SIMPLEC pressure-velocity coupling, and a modular rheological framework with conformation-tensor stabilization. We assess the method using two-dimensional, axisymmetric, and three-dimensional benchmarks governed by the Oldroyd-B and exponential Phan-Thien-Tanner models. The results agree well with published numerical and experimental data and demonstrate improved robustness for demanding viscoelastic free-surface configurations on unstructured meshes.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.17082",
  "author_total": 8,
  "authors": [
    {
      "name": "Daulet Izbassarov"
    },
    {
      "name": "Matthias Niethammer"
    },
    {
      "name": "Rahul Subburaj"
    },
    {
      "name": "Dieter Bothe"
    },
    {
      "name": "Francesco Romanò"
    },
    {
      "name": "Renjie Hao"
    },
    {
      "name": "Metin Muradoglu"
    },
    {
      "name": "Tomislav Maric"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0vq07sr09jy0w.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.17082",
  "fulltext_url": null,
  "id": "0vq07sr09jy0w",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.17082",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.flu-dyn"
    ],
    [
      "openalex",
      "2206|Fluid Dynamics and Heat Transfer"
    ]
  ],
  "openalex": "W7221779449",
  "pdf_url": "https://arxiv.org/pdf/2610.17082",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-12",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0vq07sr09jy0w.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2610.17082",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.17082"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.flu-dyn",
      "subfield": "fluid-dynamics"
    }
  ],
  "title": "DeboRheo v2.0: Improved Robustness for Geometrical VOF Simulations of Viscoelastic Two-Phase Flows",
  "title_text": "DeboRheo v2.0: Improved Robustness for Geometrical VOF Simulations of Viscoelastic Two-Phase Flows",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/0vq07sr09jy0w",
  "venue": "arXiv",
  "versions": []
}