{
  "abstract": "At high Peclet number, the classical Taylor-Aris dispersion model becomes inadequate for early-time contrast-agent transport in arteries, while an explicit closure model and a clear physical interpretation of this regime remain lacking. In this study, we develop a novel explicit-closure one-dimensional (1-D) effective dispersion model for this regime, with its functional structures identified through symbolic regression. Analysis of the resulting model reveals that, in the high-Peclet-number regime, axial transport is redistributed between the effective convection flux and the dispersive flux, resulting in a reduction of the effective convective transport velocity in the dispersion model. This redistribution gives rise to a transition from the classical quadratic scaling to a linear scaling of the effective diffusivity with radial Peclet number. Numerical validation demonstrates close agreement with the convection-diffusion model over the investigated high-Peclet-number conditions, while the classical Taylor-Aris model exhibits substantial deviations. Application of the proposed model to averaged flow velocity inversion further demonstrates improved velocity estimation, particularly in the high-Peclet-number regime. These results highlight the importance of accounting for non-classical dispersion for reliable contrast-agent-based arterial blood flow velocimetry and provide new insight into high-Peclet-number mass transport.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.21234",
  "author_total": 4,
  "authors": [
    {
      "name": "Yi-Teng Wang"
    },
    {
      "name": "Yu-Xing Gong"
    },
    {
      "name": "Yan Qiu"
    },
    {
      "name": "Kai-Rong Qin"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/crrd6td09kj5f.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.21234",
  "fulltext_url": null,
  "id": "crrd6td09kj5f",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.21234",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.flu-dyn"
    ],
    [
      "openalex",
      "2741|Optical Imaging and Spectroscopy Techniques"
    ]
  ],
  "openalex": "W7213878363",
  "pdf_url": "https://arxiv.org/pdf/2609.21234",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-30",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/crrd6td09kj5f.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:48Z",
      "native_id": "2609.21234",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.21234"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.flu-dyn",
      "subfield": "fluid-dynamics"
    }
  ],
  "title": "Discovery of an explicit closure dispersion model for contrast-agent transport in arteries",
  "title_text": "Discovery of an explicit closure dispersion model for contrast-agent transport in arteries",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:48Z",
  "url": "https://research.draconitic.com/paper/crrd6td09kj5f",
  "venue": "arXiv",
  "versions": []
}