{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:SVZSSWYVOWW5PWIHR7ZT4G4TU6","short_pith_number":"pith:SVZSSWYV","schema_version":"1.0","canonical_sha256":"9573295b1575add7d9078ff33e1b93a7988afd6868babc28bc61b6924a88c4dc","source":{"kind":"arxiv","id":"2109.09027","version":1},"attestation_state":"computed","paper":{"title":"Laminar vortex dynamics around forward-swept wings","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Kai Zhang, Kunihiko Taira","submitted_at":"2021-09-18T23:37:15Z","abstract_excerpt":"Forward-swept wings offer unique advantages in the aerodynamic performance of air vehicles. However, the low-Reynolds-number characteristics of such wings have not been explored in the past. In this work, we numerically study laminar separated flows over forward-swept wings with semi aspect ratios $sAR=0.5$ to 2 at a chord-based Reynolds number of 400. Forward-swept wings generate wakes that are significantly different from those of backward-swept wings. For low-aspect-ratio forward wings, the wakes remain steady due to the strong downwash effects induced by the tip vortices. For larger aspect"},"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":"2109.09027","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-09-18T23:37:15Z","cross_cats_sorted":[],"title_canon_sha256":"d59d9c00cc7101a16197f88818e11ee83d5843bcde545a69fc6cdbc423abce9c","abstract_canon_sha256":"cd53c472d4bcfc7dd59de3d362e38f22b05c45507794fba9a01b40c8c422c1de"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:15:40.678887Z","signature_b64":"mZajz6mV9CG8v/XLU8enKnOtTA661CGOYsAWZQMR/q+yVaGbjLy7WQ/M+YIltQRrQbpV2ANdbUz6Hg+BGsfMDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9573295b1575add7d9078ff33e1b93a7988afd6868babc28bc61b6924a88c4dc","last_reissued_at":"2026-07-05T03:15:40.678468Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:15:40.678468Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Laminar vortex dynamics around forward-swept wings","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Kai Zhang, Kunihiko Taira","submitted_at":"2021-09-18T23:37:15Z","abstract_excerpt":"Forward-swept wings offer unique advantages in the aerodynamic performance of air vehicles. However, the low-Reynolds-number characteristics of such wings have not been explored in the past. In this work, we numerically study laminar separated flows over forward-swept wings with semi aspect ratios $sAR=0.5$ to 2 at a chord-based Reynolds number of 400. Forward-swept wings generate wakes that are significantly different from those of backward-swept wings. For low-aspect-ratio forward wings, the wakes remain steady due to the strong downwash effects induced by the tip vortices. For larger aspect"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.09027","kind":"arxiv","version":1},"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/2109.09027/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":"2109.09027","created_at":"2026-07-05T03:15:40.678526+00:00"},{"alias_kind":"arxiv_version","alias_value":"2109.09027v1","created_at":"2026-07-05T03:15:40.678526+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.09027","created_at":"2026-07-05T03:15:40.678526+00:00"},{"alias_kind":"pith_short_12","alias_value":"SVZSSWYVOWW5","created_at":"2026-07-05T03:15:40.678526+00:00"},{"alias_kind":"pith_short_16","alias_value":"SVZSSWYVOWW5PWIH","created_at":"2026-07-05T03:15:40.678526+00:00"},{"alias_kind":"pith_short_8","alias_value":"SVZSSWYV","created_at":"2026-07-05T03:15:40.678526+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/SVZSSWYVOWW5PWIHR7ZT4G4TU6","json":"https://pith.science/pith/SVZSSWYVOWW5PWIHR7ZT4G4TU6.json","graph_json":"https://pith.science/api/pith-number/SVZSSWYVOWW5PWIHR7ZT4G4TU6/graph.json","events_json":"https://pith.science/api/pith-number/SVZSSWYVOWW5PWIHR7ZT4G4TU6/events.json","paper":"https://pith.science/paper/SVZSSWYV"},"agent_actions":{"view_html":"https://pith.science/pith/SVZSSWYVOWW5PWIHR7ZT4G4TU6","download_json":"https://pith.science/pith/SVZSSWYVOWW5PWIHR7ZT4G4TU6.json","view_paper":"https://pith.science/paper/SVZSSWYV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2109.09027&json=true","fetch_graph":"https://pith.science/api/pith-number/SVZSSWYVOWW5PWIHR7ZT4G4TU6/graph.json","fetch_events":"https://pith.science/api/pith-number/SVZSSWYVOWW5PWIHR7ZT4G4TU6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SVZSSWYVOWW5PWIHR7ZT4G4TU6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SVZSSWYVOWW5PWIHR7ZT4G4TU6/action/storage_attestation","attest_author":"https://pith.science/pith/SVZSSWYVOWW5PWIHR7ZT4G4TU6/action/author_attestation","sign_citation":"https://pith.science/pith/SVZSSWYVOWW5PWIHR7ZT4G4TU6/action/citation_signature","submit_replication":"https://pith.science/pith/SVZSSWYVOWW5PWIHR7ZT4G4TU6/action/replication_record"}},"created_at":"2026-07-05T03:15:40.678526+00:00","updated_at":"2026-07-05T03:15:40.678526+00:00"}