{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:NKZIE2DIW2IPIRFEKQ7SHNL5XQ","short_pith_number":"pith:NKZIE2DI","schema_version":"1.0","canonical_sha256":"6ab2826868b690f444a4543f23b57dbc3ca79f71b6e4812889fc2eb0de08ad9d","source":{"kind":"arxiv","id":"2512.13582","version":2},"attestation_state":"computed","paper":{"title":"Spectral analysis of attached and separated turbulent flows over a Gaussian-shaped bump","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Georgios Rigas, Jakob G. R. von Saldern, Kilian Oberleithner, Lukas M. Fuchs, Roman Klopsch","submitted_at":"2025-12-15T17:36:29Z","abstract_excerpt":"We investigate the broadband turbulent dynamics of attached and separated flows over a Gaussian bump, focusing on the origin of low-frequency coherent structures. The analysis combines time-resolved experimental measurements with physics-based linear models, using mean fields previously assimilated from the same dataset as base flows. Spectral proper orthogonal decomposition reveals coherent dynamics in low- and medium-frequency regimes for both flows, with the low-frequency dynamics being substantially stronger in the separated case. In the separated flow, these dynamics are linked to a three"},"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":"2512.13582","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-12-15T17:36:29Z","cross_cats_sorted":[],"title_canon_sha256":"5ec4e6f1366ee6ede4c31dee5359f84cbfea1855a494c90cd3862aef9a6661eb","abstract_canon_sha256":"ca22db1c9e973c4b3462fc9c54d3b2a2de0b49a7d628ed313bb6fb393cbcef52"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-12T01:08:19.591634Z","signature_b64":"yo2WMpeULTNhRC95Y6+SbQkePOUaDjMiCIX2MCYshdwsHA1xzOXgUgp1bDW99H3Km22OAsz9oBAVA3oryB0rCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6ab2826868b690f444a4543f23b57dbc3ca79f71b6e4812889fc2eb0de08ad9d","last_reissued_at":"2026-06-12T01:08:19.590586Z","signature_status":"signed_v1","first_computed_at":"2026-06-12T01:08:19.590586Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spectral analysis of attached and separated turbulent flows over a Gaussian-shaped bump","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Georgios Rigas, Jakob G. R. von Saldern, Kilian Oberleithner, Lukas M. Fuchs, Roman Klopsch","submitted_at":"2025-12-15T17:36:29Z","abstract_excerpt":"We investigate the broadband turbulent dynamics of attached and separated flows over a Gaussian bump, focusing on the origin of low-frequency coherent structures. The analysis combines time-resolved experimental measurements with physics-based linear models, using mean fields previously assimilated from the same dataset as base flows. Spectral proper orthogonal decomposition reveals coherent dynamics in low- and medium-frequency regimes for both flows, with the low-frequency dynamics being substantially stronger in the separated case. In the separated flow, these dynamics are linked to a three"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2512.13582","kind":"arxiv","version":2},"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/2512.13582/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":"2512.13582","created_at":"2026-06-12T01:08:19.590725+00:00"},{"alias_kind":"arxiv_version","alias_value":"2512.13582v2","created_at":"2026-06-12T01:08:19.590725+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2512.13582","created_at":"2026-06-12T01:08:19.590725+00:00"},{"alias_kind":"pith_short_12","alias_value":"NKZIE2DIW2IP","created_at":"2026-06-12T01:08:19.590725+00:00"},{"alias_kind":"pith_short_16","alias_value":"NKZIE2DIW2IPIRFE","created_at":"2026-06-12T01:08:19.590725+00:00"},{"alias_kind":"pith_short_8","alias_value":"NKZIE2DI","created_at":"2026-06-12T01:08:19.590725+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/NKZIE2DIW2IPIRFEKQ7SHNL5XQ","json":"https://pith.science/pith/NKZIE2DIW2IPIRFEKQ7SHNL5XQ.json","graph_json":"https://pith.science/api/pith-number/NKZIE2DIW2IPIRFEKQ7SHNL5XQ/graph.json","events_json":"https://pith.science/api/pith-number/NKZIE2DIW2IPIRFEKQ7SHNL5XQ/events.json","paper":"https://pith.science/paper/NKZIE2DI"},"agent_actions":{"view_html":"https://pith.science/pith/NKZIE2DIW2IPIRFEKQ7SHNL5XQ","download_json":"https://pith.science/pith/NKZIE2DIW2IPIRFEKQ7SHNL5XQ.json","view_paper":"https://pith.science/paper/NKZIE2DI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2512.13582&json=true","fetch_graph":"https://pith.science/api/pith-number/NKZIE2DIW2IPIRFEKQ7SHNL5XQ/graph.json","fetch_events":"https://pith.science/api/pith-number/NKZIE2DIW2IPIRFEKQ7SHNL5XQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NKZIE2DIW2IPIRFEKQ7SHNL5XQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NKZIE2DIW2IPIRFEKQ7SHNL5XQ/action/storage_attestation","attest_author":"https://pith.science/pith/NKZIE2DIW2IPIRFEKQ7SHNL5XQ/action/author_attestation","sign_citation":"https://pith.science/pith/NKZIE2DIW2IPIRFEKQ7SHNL5XQ/action/citation_signature","submit_replication":"https://pith.science/pith/NKZIE2DIW2IPIRFEKQ7SHNL5XQ/action/replication_record"}},"created_at":"2026-06-12T01:08:19.590725+00:00","updated_at":"2026-06-12T01:08:19.590725+00:00"}