{
  "abstract": "In recent years there has been significant interest in understanding magnetohydrodynamic (MHD) Jeffery–Hamel problems involving two-dimensional flow. Such dynamics involve an incompressible, conducting, viscous fluid flowing between two inclined planar walls, forming a converging or diverging channel. In reading the associated literature, we discovered a repeated issue with the reported form of the Hartmann number, linked with a frequent inconsistency in the form of the ordinary differential equation under consideration. The purpose of this note is to bring this fundamental error to light and to suggest some corrections.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Mathematics, The Hong Kong University of Science and Technology, HKUST, Clear Water Bay, Kowloon, Hong Kong",
    "School of Mathematics & Statistics, The University of New South Wales, UNSW, Sydney, NSW, 2052, Australia; Corresponding author."
  ],
  "article_type": null,
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  "author_total": 2,
  "authors": [
    {
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        0
      ],
      "name": "Lik Kan Nicholas Lo"
    },
    {
      "affs": [
        1
      ],
      "name": "Christopher C. Tisdell"
    }
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  "bibtex": "https://research.draconitic.com/paper/69f3afjkjj0zc.bib",
  "cited_by": 0,
  "doi": "10.1016/j.exco.2026.100235",
  "fulltext_url": "http://www.sciencedirect.com/science/article/pii/S2666657X26000236",
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  "issns": [
    "2666-657X"
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  "landing_url": "https://doi.org/10.1016/j.exco.2026.100235",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
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      "lcc",
      "QA1-939"
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  "openalex": "W7225076621",
  "pdf_url": null,
  "pmcid": null,
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  "published": "2026-11-07",
  "publisher": "Elsevier",
  "ris": "https://research.draconitic.com/paper/69f3afjkjj0zc.ris",
  "sources": [
    {
      "first_seen": "2026-11-07T14:21:11Z",
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      "url": "https://doi.org/10.1016/j.exco.2026.100235"
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  "subjects": [
    {
      "field": "mathematics",
      "origin": "lcc:QA1-939",
      "subfield": "general"
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  "title": "Have we been using the wrong Hartmann number? Fixing fundamental errors in MHD Jeffery–Hamel flow",
  "title_text": "Have we been using the wrong Hartmann number? Fixing fundamental errors in MHD Jeffery–Hamel flow",
  "type": "peer-reviewed",
  "updated_at": "2026-11-09T14:20:58Z",
  "url": "https://research.draconitic.com/paper/69f3afjkjj0zc",
  "venue": "Examples and Counterexamples",
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}