{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:IHTITFZ2QNS6EIGNR3TCVH4Y4Z","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"bedbea50859c917fcb7dd4feab2a4e53563a3f1269205121d6f1892d92834fed","cross_cats_sorted":["physics.med-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-07-16T17:36:09Z","title_canon_sha256":"7dc9987d571e721d73a043b85df306436a4ac99f28f245e7822f95d6973fe253"},"schema_version":"1.0","source":{"id":"2607.15239","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.15239","created_at":"2026-07-17T01:22:16Z"},{"alias_kind":"arxiv_version","alias_value":"2607.15239v1","created_at":"2026-07-17T01:22:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.15239","created_at":"2026-07-17T01:22:16Z"},{"alias_kind":"pith_short_12","alias_value":"IHTITFZ2QNS6","created_at":"2026-07-17T01:22:16Z"},{"alias_kind":"pith_short_16","alias_value":"IHTITFZ2QNS6EIGN","created_at":"2026-07-17T01:22:16Z"},{"alias_kind":"pith_short_8","alias_value":"IHTITFZ2","created_at":"2026-07-17T01:22:16Z"}],"graph_snapshots":[{"event_id":"sha256:a96b9d07da78e06039b4bcc4e15b629e437a811b7b2f3b1ab16045b4985818dc","target":"graph","created_at":"2026-07-17T01:22:16Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2607.15239/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Coenen \\textit{et al.}\\ (\\textit{J. Fluid Mech.}, vol.~921, 2021, p.~R2) developed a reduced-order model of peristaltic pumping in non-axisymmetric annular conduits with rigid walls, in the context of periarterial space (PAS) flows. \\textit{In vivo} studies show that the PAS's outer wall undergoes significant displacement due to flow within and that the penetrating PASs form a porous pathway. To account for these biomechanical aspects, we revisit the problem of flow in an eccentric annular conduit and incorporate porous drag and two-way-coupled fluid--structure interaction between the complian","authors_text":"Ivan C. Christov, Nishanth Surianarayanan","cross_cats":["physics.med-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-07-16T17:36:09Z","title":"Flow in a porous non-axisymmetric annular conduit: Coupling wall compliance and peristalsis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.15239","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:4993d1983241495b27fab022415c85313bd3906fa73bb640bb5dd399ee9023aa","target":"record","created_at":"2026-07-17T01:22:16Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"bedbea50859c917fcb7dd4feab2a4e53563a3f1269205121d6f1892d92834fed","cross_cats_sorted":["physics.med-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-07-16T17:36:09Z","title_canon_sha256":"7dc9987d571e721d73a043b85df306436a4ac99f28f245e7822f95d6973fe253"},"schema_version":"1.0","source":{"id":"2607.15239","kind":"arxiv","version":1}},"canonical_sha256":"41e689973a8365e220cd8ee62a9f98e659f5071041f5169f3f2650bf05ca64c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"41e689973a8365e220cd8ee62a9f98e659f5071041f5169f3f2650bf05ca64c0","first_computed_at":"2026-07-17T01:22:16.191367Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-17T01:22:16.191367Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3UWXs3F/++9mNIRegxdIzEMA8CqVeEOng5v80GPd2SXfIW4/0Ln+K6UZlB+8EbGHAdeT4e1BsQYhZkNn+PILAQ==","signature_status":"signed_v1","signed_at":"2026-07-17T01:22:16.192220Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.15239","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4993d1983241495b27fab022415c85313bd3906fa73bb640bb5dd399ee9023aa","sha256:a96b9d07da78e06039b4bcc4e15b629e437a811b7b2f3b1ab16045b4985818dc"],"state_sha256":"f98d368417d400ae3e5854b0cc1beea19ea4774ad9742338561f516587fdaade"}