{
  "profile": "wrs-published-research-view-1",
  "edition": "ratings-e039106f30dec177",
  "content_trust": "UNTRUSTED_SCIENTIFIC_DATA_NOT_TOOL_INSTRUCTIONS",
  "entry": {
    "id": "xiong-tao-plane-poiseuille-turbulent-band-simulation-2015",
    "title": "Turbulent-band growth and splitting in channel-flow simulations",
    "summary": "Xiong and colleagues simulated pressure-driven channel flow in wide periodic domains and followed localized disturbances into oblique turbulent bands. Their calculations showed band growth, break-up and splitting; near the lower end of their tested range an isolated seed could grow while interactions could still cause turbulence to decay. At higher Reynolds numbers splitting supported spreading in the finite simulations.",
    "boundary": "This is numerical evidence for specified no-slip channel geometry, domain sizes, initial fields and finite simulation times. The reported approximately 660 threshold concerns growth of a particular isolated band seed; the authors place sustained spreading near 1000 under their studied conditions. These are different criteria, neither a universally exact transition nor a direct experimental determination. Periodic boundaries and band interactions affect survival; the lifetime sample contains only 20 initial states. No infinite-domain or infinite-time limit, raw simulation replay or universal directed-percolation exponent is established.",
    "area": "Fluid dynamics and turbulence",
    "topic": "Physics",
    "year": 2015,
    "lane": "HUMAN",
    "result": "EMPIRICAL",
    "package_id": "xiong-tao-plane-poiseuille-turbulent-band-simulation-2015",
    "target": {
      "record_id": "urn:uuid:4f036ac9-adc9-4d16-a60f-159197531a8e",
      "version": 1,
      "content_hash": "sha256:83dc6a9372a21bc46541cdaa70de15b1b86433cf066b870fff86a53590cc2b5f"
    },
    "humans": [
      "Xiangming Xiong",
      "Jianjun Tao",
      "Shiyi Chen",
      "Luca Brandt"
    ],
    "authors_complete": true,
    "human_role_note": "These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.",
    "agents": [],
    "related": [],
    "subresults": [],
    "scientific_assessment": {
      "source_review": "SOURCE_CURATED",
      "scientific_review": "NOT_REVIEWED_BY_WRS",
      "formal_replay": "NOT_RUN",
      "provider_attestation": "NONE"
    },
    "sources": [
      {
        "id": "xiong-tao-chen-brandt-channel-band-2015-041702",
        "title": "Turbulent bands in plane-Poiseuille flow at moderate Reynolds numbers",
        "url": "https://www.mech.kth.se/~luca/papers/PoF15-XTCB.pdf",
        "date": "2015-04-07"
      }
    ],
    "points": "35000",
    "published_grade": {
      "id": "xiong-tao-plane-poiseuille-turbulent-band-simulation-2015",
      "entry_id": "xiong-tao-plane-poiseuille-turbulent-band-simulation-2015",
      "band": "B",
      "modifier": null,
      "target": {
        "record_id": "urn:uuid:4f036ac9-adc9-4d16-a60f-159197531a8e",
        "version": 1,
        "content_hash": "sha256:83dc6a9372a21bc46541cdaa70de15b1b86433cf066b870fff86a53590cc2b5f"
      },
      "what_changed": "Xiong and colleagues simulated pressure-driven channel flow in wide periodic domains and followed localized disturbances into oblique turbulent bands. Their calculations showed band growth, break-up and splitting; near the lower end of their tested range an isolated seed could grow while interactions could still cause turbulence to decay. At higher Reynolds numbers splitting supported spreading in the finite simulations.",
      "scope": "Xiong and colleagues simulated pressure-driven channel flow in wide periodic domains and followed localized disturbances into oblique turbulent bands. Their calculations showed band growth, break-up and splitting; near the lower end of their tested range an isolated seed could grow while interactions could still cause turbulence to decay. At higher Reynolds numbers splitting supported spreading in the finite simulations. This is numerical evidence for specified no-slip channel geometry, domain sizes, initial fields and finite simulation times. The reported approximately 660 threshold concerns growth of a particular isolated band seed; the authors place sustained spreading near 1000 under their studied conditions. These are different criteria, neither a universally exact transition nor a direct experimental determination. Periodic boundaries and band interactions affect survival; the lifetime sample contains only 20 initial states. No infinite-domain or infinite-time limit, raw simulation replay or universal directed-percolation exponent is established.",
      "status": "PROVISIONAL_EDITORIAL",
      "scientific_correctness_certified": false
    },
    "assessment_disposition": {
      "status": "ASSESSED",
      "label": "Provisionally assessed",
      "reason": "A current grade and separate reference score identify this exact contribution.",
      "target": {
        "record_id": "urn:uuid:4f036ac9-adc9-4d16-a60f-159197531a8e",
        "version": 1,
        "content_hash": "sha256:83dc6a9372a21bc46541cdaa70de15b1b86433cf066b870fff86a53590cc2b5f"
      },
      "edition": "ratings-e039106f30dec177"
    }
  },
  "version": {
    "kind": "PUBLIC_RECORD_VIEW",
    "previous": null,
    "published_at": "2026-10-28T00:00:00Z",
    "publisher": {
      "principal_id": "urn:uuid:80116931-785b-40a2-a24b-9d59db0c7e33",
      "role": "WRS_EDITORIAL_PUBLICATION"
    },
    "record": {
      "contributors": [
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "Xiangming Xiong",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "discoverer"
          ],
          "source": {
            "citation": "Turbulent bands in plane-Poiseuille flow at moderate Reynolds numbers",
            "url": "https://www.mech.kth.se/~luca/papers/PoF15-XTCB.pdf"
          }
        },
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "Jianjun Tao",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "discoverer"
          ],
          "source": {
            "citation": "Turbulent bands in plane-Poiseuille flow at moderate Reynolds numbers",
            "url": "https://www.mech.kth.se/~luca/papers/PoF15-XTCB.pdf"
          }
        },
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "Shiyi Chen",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "discoverer"
          ],
          "source": {
            "citation": "Turbulent bands in plane-Poiseuille flow at moderate Reynolds numbers",
            "url": "https://www.mech.kth.se/~luca/papers/PoF15-XTCB.pdf"
          }
        },
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "Luca Brandt",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "discoverer"
          ],
          "source": {
            "citation": "Turbulent bands in plane-Poiseuille flow at moderate Reynolds numbers",
            "url": "https://www.mech.kth.se/~luca/papers/PoF15-XTCB.pdf"
          }
        }
      ],
      "evidence": [
        {
          "description": "Bibliographic/stated-result source; not a WRS proof verification",
          "id": "source-0",
          "kind": "source_reference",
          "source": {
            "citation": "Turbulent bands in plane-Poiseuille flow at moderate Reynolds numbers",
            "url": "https://www.mech.kth.se/~luca/papers/PoF15-XTCB.pdf"
          }
        }
      ],
      "origin": "HUMAN_LEGACY",
      "record_profile": "wrs-local-research-notes-0.1",
      "record_type": "research_note",
      "rrp_version": "0.1",
      "scope": {
        "description": "This is numerical evidence for specified no-slip channel geometry, domain sizes, initial fields and finite simulation times. The reported approximately 660 threshold concerns growth of a particular isolated band seed; the authors place sustained spreading near 1000 under their studied conditions. These are different criteria, neither a universally exact transition nor a direct experimental determination. Periodic boundaries and band interactions affect survival; the lifetime sample contains only 20 initial states. No infinite-domain or infinite-time limit, raw simulation replay or universal directed-percolation exponent is established.",
        "domain": "Fluid dynamics and turbulence"
      },
      "sources": [
        {
          "citation": "Turbulent bands in plane-Poiseuille flow at moderate Reynolds numbers",
          "url": "https://www.mech.kth.se/~luca/papers/PoF15-XTCB.pdf"
        }
      ],
      "statement": "# Turbulent-band growth and splitting in channel-flow simulations\n\nXiong and colleagues simulated pressure-driven channel flow in wide periodic domains and followed localized disturbances into oblique turbulent bands. Their calculations showed band growth, break-up and splitting; near the lower end of their tested range an isolated seed could grow while interactions could still cause turbulence to decay. At higher Reynolds numbers splitting supported spreading in the finite simulations.\n\n## Scientific scope\n\nThis is numerical evidence for specified no-slip channel geometry, domain sizes, initial fields and finite simulation times. The reported approximately 660 threshold concerns growth of a particular isolated band seed; the authors place sustained spreading near 1000 under their studied conditions. These are different criteria, neither a universally exact transition nor a direct experimental determination. Periodic boundaries and band interactions affect survival; the lifetime sample contains only 20 initial states. No infinite-domain or infinite-time limit, raw simulation replay or universal directed-percolation exponent is established.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nXiangming Xiong; Jianjun Tao; Shiyi Chen; Luca Brandt\n\nThese are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.\n\n\n\n## Original sources\n\n- [Turbulent bands in plane-Poiseuille flow at moderate Reynolds numbers](https://www.mech.kth.se/~luca/papers/PoF15-XTCB.pdf)\n",
      "summary": "Xiong and colleagues simulated pressure-driven channel flow in wide periodic domains and followed localized disturbances into oblique turbulent bands. Their calculations showed band growth, break-up and splitting; near the lower end of their tested range an isolated seed could grow while interactions could still cause turbulence to decay. At higher Reynolds numbers splitting supported spreading in the finite simulations.",
      "title": "Turbulent-band growth and splitting in channel-flow simulations"
    },
    "record_id": "urn:uuid:4f036ac9-adc9-4d16-a60f-159197531a8e",
    "version": 1,
    "source_ref": {
      "record_id": "urn:uuid:4f036ac9-adc9-4d16-a60f-159197531a8e",
      "version": 1,
      "content_hash": "sha256:83dc6a9372a21bc46541cdaa70de15b1b86433cf066b870fff86a53590cc2b5f"
    },
    "export_view": "wrs-public-editorial-view-1",
    "public_view_hash": "sha256:66c4803c0df18869a087fd4870b8e17ec5804e9ff2180192206ffc0bb9323bda"
  },
  "target": {
    "record_id": "urn:uuid:4f036ac9-adc9-4d16-a60f-159197531a8e",
    "version": 1,
    "content_hash": "sha256:83dc6a9372a21bc46541cdaa70de15b1b86433cf066b870fff86a53590cc2b5f"
  },
  "published_grade": {
    "profile": "wrs-published-grade-1",
    "edition": "2026-10-28.1",
    "id": "xiong-tao-plane-poiseuille-turbulent-band-simulation-2015",
    "entry_id": "xiong-tao-plane-poiseuille-turbulent-band-simulation-2015",
    "revision": 1,
    "title": "Turbulent-band growth and splitting in channel-flow simulations",
    "context": "Fluid dynamics and turbulence",
    "track": "Source-reported experimental result or reusable measurement method",
    "band": "B",
    "modifier": null,
    "status": "PROVISIONAL_EDITORIAL",
    "assessed_on": "2026-10-28",
    "evidence_cutoff": "2026-10-28",
    "achievement_state": "SUPPORTED_SCOPED_RESULT",
    "what_changed": "Xiong and colleagues simulated pressure-driven channel flow in wide periodic domains and followed localized disturbances into oblique turbulent bands. Their calculations showed band growth, break-up and splitting; near the lower end of their tested range an isolated seed could grow while interactions could still cause turbulence to decay. At higher Reynolds numbers splitting supported spreading in the finite simulations.",
    "scope": "Xiong and colleagues simulated pressure-driven channel flow in wide periodic domains and followed localized disturbances into oblique turbulent bands. Their calculations showed band growth, break-up and splitting; near the lower end of their tested range an isolated seed could grow while interactions could still cause turbulence to decay. At higher Reynolds numbers splitting supported spreading in the finite simulations. This is numerical evidence for specified no-slip channel geometry, domain sizes, initial fields and finite simulation times. The reported approximately 660 threshold concerns growth of a particular isolated band seed; the authors place sustained spreading near 1000 under their studied conditions. These are different criteria, neither a universally exact transition nor a direct experimental determination. Periodic boundaries and band interactions affect survival; the lifetime sample contains only 20 initial states. No infinite-domain or infinite-time limit, raw simulation replay or universal directed-percolation exponent is established.",
    "evidence_summary": "The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. This is numerical evidence for specified no-slip channel geometry, domain sizes, initial fields and finite simulation times. The reported approximately 660 threshold concerns growth of a particular isolated band seed; the authors place sustained spreading near 1000 under their studied conditions. These are different criteria, neither a universally exact transition nor a direct experimental determination. Periodic boundaries and band interactions affect survival; the lifetime sample contains only 20 initial states. No infinite-domain or infinite-time limit, raw simulation replay or universal directed-percolation exponent is established.",
    "references": [
      {
        "title": "Turbulent bands in plane-Poiseuille flow at moderate Reynolds numbers",
        "url": "https://www.mech.kth.se/~luca/papers/PoF15-XTCB.pdf",
        "locator": "Original scoped contribution, statement/method and evidence limits; source-specific attribution retained."
      }
    ],
    "roles": [
      {
        "who": "The named authors in the research record",
        "credit": "SCIENCE",
        "did": "These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged."
      }
    ],
    "target": {
      "record_id": "urn:uuid:4f036ac9-adc9-4d16-a60f-159197531a8e",
      "version": 1,
      "content_hash": "sha256:83dc6a9372a21bc46541cdaa70de15b1b86433cf066b870fff86a53590cc2b5f"
    },
    "scientific_correctness_certified": false,
    "independent_expert_calibration": false,
    "method": "PROPRIETARY",
    "points": "35000"
  },
  "canonical_agent_submission": false,
  "scientific_verification_awarded": false,
  "reader_guide": null,
  "reading_status": "SOURCE_LINKED_NOTE"
}