{
  "abstract": "Computational Fluid Dynamics (CFD) prediction of stirred-tank flows in the transitional regime remains challenging due to the coexistence of coherent impeller-driven structures, weak turbulence and strong sensitivity to operating conditions. This study evaluates turbulence-modelling strategies for Newtonian flow in a baffled stirred tank equipped with a wide-blade hydrofoil impeller. Simulations spanning laminar, transitional and fully turbulent regimes are performed using a laminar model, the generalised -(GEKO) Reynolds-averaged Navier-Stokes (RANS) model, Stress-Blended Eddy Simulation (SBES) and a modified SBES formulation with a fixed RANS-LES blending distance (SBES-FBD). Predictions are validated against time-resolved Particle Image Velocimetry (PIV) data using mean velocity fields, turbulence kinetic energy and Proper Orthogonal Decomposition (POD). For the impeller-tank combination considered here, the laminar model is valid only at low Reynolds number (Re < 50), while GEKO systematically underpredicts turbulence in the transitional regime (simulated for 150 < Re <700). Default SBES performs well only at higher transitional and turbulent Reynolds numbers (Re ~35,000), whereas SBES-FBD provides consistent agreement across transitional and turbulent conditions by maintaining sufficient LES activation (150 < Re < 35,000). The results offer clear guidance for CFD model selection in transitional stirred-tank applications.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "name": "G.K. Wadsley"
    },
    {
      "name": "D.F. Fletcher"
    },
    {
      "name": "A. Ingram"
    },
    {
      "name": "J. Aubin"
    },
    {
      "name": "W. Rosales Trujillo"
    },
    {
      "name": "M.J.H. Simmons"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/90w7703r6dfzf.bib",
  "cited_by": 0,
  "doi": "10.1016/j.cej.2026.180786",
  "fulltext_url": null,
  "id": "90w7703r6dfzf",
  "issns": [
    "1385-8947"
  ],
  "landing_url": "https://hal.science/hal-05850651v1",
  "language": "en",
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "hal",
      "0.spi"
    ],
    [
      "hal",
      "1.chim.geni"
    ],
    [
      "hal",
      "1.spi.meca"
    ],
    [
      "hal",
      "2.spi.meca.mefl"
    ],
    [
      "openalex",
      "2204|Fluid Dynamics and Mixing"
    ]
  ],
  "openalex": "W7163881804",
  "pdf_url": "https://hal.science/hal-05850651/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": "Elsevier",
  "ris": "https://research.draconitic.com/paper/90w7703r6dfzf.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T12:20:53Z",
      "native_id": "hal-05850651",
      "source": "hal",
      "url": "https://hal.science/hal-05850651v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "hal:0.chim",
      "subfield": "general"
    }
  ],
  "title": "Evaluation of turbulence models for transitional-regime flows in a stirred tank equipped with a wide-blade hydrofoil",
  "title_text": "Evaluation of turbulence models for transitional-regime flows in a stirred tank equipped with a wide-blade hydrofoil",
  "type": "peer-reviewed",
  "updated_at": "2026-11-05T12:20:12Z",
  "url": "https://research.draconitic.com/paper/90w7703r6dfzf",
  "venue": "Chemical Engineering Journal",
  "versions": []
}