{
  "abstract": "Large eddy simulation (LES) of turbulent reacting flows relies on several models accounting for subgrid scale effects on flow dynamics, scalar transport, source terms, nanoparticle dynamics or spray evolution for instance. In the literature, many subgrid approaches have been developed in the last decades based on a priori analysis of direct numerical simulations (DNS). Generally, to be validated a posteriori, these models are directly used in LES of reference DNS or of experimental configurations. However, an actual LES combines several models enabling only the validation of the global LES strategy, but not of each individual model. To overcome this issue, the present work proposes a rigorous a posteriori validation strategy based on the transport of a filtered scalar equation by unfiltered flow variables, so that the sole filtered quantity is the scalar itself. By solving these equations on a DNS-like grid, and using deconvolution algorithms, the effect of a single subgrid model can be analyzed, while exactly evaluating the other terms. The proposed approach is illustrated investigating a simple case represented by agglomerating nanoparticles in a turbulent flow. The considered test case will allow to rigorously evaluate the validity of literature subgrid models for the coagulation term, classically used to perform LES of soot production and metal-oxide synthesis in turbulent flames.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "name": "Muhammad Harchaoui"
    },
    {
      "name": "Aymeric Vié"
    },
    {
      "name": "Christian Tenaud"
    },
    {
      "name": "Denis Veynante"
    },
    {
      "name": "Benedetta Franzelli"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/eww42yek9trcz.bib",
  "cited_by": 0,
  "doi": "10.1016/j.proci.2026.106153",
  "fulltext_url": null,
  "id": "eww42yek9trcz",
  "issns": [
    "1540-7489",
    "1540-7489"
  ],
  "landing_url": "https://hal.science/hal-05778291v1",
  "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": [
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      "hal",
      "0.info"
    ],
    [
      "hal",
      "0.phys"
    ],
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      "hal",
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    ],
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      "hal",
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    [
      "openalex",
      "2206|Fluid Dynamics and Turbulent Flows"
    ]
  ],
  "openalex": "W7167095256",
  "pdf_url": "https://hal.science/hal-05778291/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-02",
  "publisher": "Elsevier",
  "ris": "https://research.draconitic.com/paper/eww42yek9trcz.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:47Z",
      "native_id": "hal-05778291",
      "source": "hal",
      "url": "https://hal.science/hal-05778291v1"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "hal:2.phys.meca.mefl",
      "subfield": "fluid-dynamics"
    }
  ],
  "title": "A deconvolution-based approach for a posteriori validation of subgrid-scale models: Application to agglomerating nanoparticles",
  "title_text": "A deconvolution-based approach for a posteriori validation of subgrid-scale models: Application to agglomerating nanoparticles",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:47Z",
  "url": "https://research.draconitic.com/paper/eww42yek9trcz",
  "venue": "Proceedings of the Combustion Institute",
  "versions": []
}