{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:W2BEV2FO4U4IDYDUNHZHM3WCFM","short_pith_number":"pith:W2BEV2FO","schema_version":"1.0","canonical_sha256":"b6824ae8aee53881e07469f2766ec22b05fc6eac90d5f26830f92744eab4c49b","source":{"kind":"arxiv","id":"2110.14966","version":3},"attestation_state":"computed","paper":{"title":"Completing Moody's friction diagram in the turbulent transitional regime","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Rory T. Cerbus, Tom Mullin","submitted_at":"2021-10-28T09:13:07Z","abstract_excerpt":"The Moody diagram, a plot of friction factor versus flow rate, is a well-known engineering tool for estimating head loss in pipe flows. It comprises well-defined relationships between friction factor and flow rate over the majority of parameter space, but there is a gap in the transitional regime between laminar and turbulent flows. It is often left hatched because in this parameter range the friction is deemed indefinite, which Moody remarked could at least partially be due to the different initial conditions used to establish the flow. Here we investigate this issue and seek a systematic dep"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2110.14966","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-10-28T09:13:07Z","cross_cats_sorted":[],"title_canon_sha256":"8faedd73a3ecd73b997ee373f5581be55cb6a00c419955e54d69feb1c31f0b19","abstract_canon_sha256":"39abaf18f43083956e51446f2a7bbe5bd61d907c0ed9ac38e99e99bddff46835"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:22:11.825638Z","signature_b64":"5l5WfnXP+kLfntRvyFHLujqURYCgFNphrB1JaCy84xzy6PqaT+VPboQlaHa5GPzyMGY4X0D04ZGMLQ/DvI19CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b6824ae8aee53881e07469f2766ec22b05fc6eac90d5f26830f92744eab4c49b","last_reissued_at":"2026-07-05T09:22:11.825215Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:22:11.825215Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Completing Moody's friction diagram in the turbulent transitional regime","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Rory T. Cerbus, Tom Mullin","submitted_at":"2021-10-28T09:13:07Z","abstract_excerpt":"The Moody diagram, a plot of friction factor versus flow rate, is a well-known engineering tool for estimating head loss in pipe flows. It comprises well-defined relationships between friction factor and flow rate over the majority of parameter space, but there is a gap in the transitional regime between laminar and turbulent flows. It is often left hatched because in this parameter range the friction is deemed indefinite, which Moody remarked could at least partially be due to the different initial conditions used to establish the flow. Here we investigate this issue and seek a systematic dep"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2110.14966","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2110.14966/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2110.14966","created_at":"2026-07-05T09:22:11.825267+00:00"},{"alias_kind":"arxiv_version","alias_value":"2110.14966v3","created_at":"2026-07-05T09:22:11.825267+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2110.14966","created_at":"2026-07-05T09:22:11.825267+00:00"},{"alias_kind":"pith_short_12","alias_value":"W2BEV2FO4U4I","created_at":"2026-07-05T09:22:11.825267+00:00"},{"alias_kind":"pith_short_16","alias_value":"W2BEV2FO4U4IDYDU","created_at":"2026-07-05T09:22:11.825267+00:00"},{"alias_kind":"pith_short_8","alias_value":"W2BEV2FO","created_at":"2026-07-05T09:22:11.825267+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/W2BEV2FO4U4IDYDUNHZHM3WCFM","json":"https://pith.science/pith/W2BEV2FO4U4IDYDUNHZHM3WCFM.json","graph_json":"https://pith.science/api/pith-number/W2BEV2FO4U4IDYDUNHZHM3WCFM/graph.json","events_json":"https://pith.science/api/pith-number/W2BEV2FO4U4IDYDUNHZHM3WCFM/events.json","paper":"https://pith.science/paper/W2BEV2FO"},"agent_actions":{"view_html":"https://pith.science/pith/W2BEV2FO4U4IDYDUNHZHM3WCFM","download_json":"https://pith.science/pith/W2BEV2FO4U4IDYDUNHZHM3WCFM.json","view_paper":"https://pith.science/paper/W2BEV2FO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2110.14966&json=true","fetch_graph":"https://pith.science/api/pith-number/W2BEV2FO4U4IDYDUNHZHM3WCFM/graph.json","fetch_events":"https://pith.science/api/pith-number/W2BEV2FO4U4IDYDUNHZHM3WCFM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/W2BEV2FO4U4IDYDUNHZHM3WCFM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/W2BEV2FO4U4IDYDUNHZHM3WCFM/action/storage_attestation","attest_author":"https://pith.science/pith/W2BEV2FO4U4IDYDUNHZHM3WCFM/action/author_attestation","sign_citation":"https://pith.science/pith/W2BEV2FO4U4IDYDUNHZHM3WCFM/action/citation_signature","submit_replication":"https://pith.science/pith/W2BEV2FO4U4IDYDUNHZHM3WCFM/action/replication_record"}},"created_at":"2026-07-05T09:22:11.825267+00:00","updated_at":"2026-07-05T09:22:11.825267+00:00"}