{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:BFARTB7V3GM6SGCCINRDOF65ZE","short_pith_number":"pith:BFARTB7V","schema_version":"1.0","canonical_sha256":"09411987f5d999e9184243623717ddc9160215857bd660eb449cd5c4cc228340","source":{"kind":"arxiv","id":"1908.04637","version":2},"attestation_state":"computed","paper":{"title":"Numerical benchmarking of fluid-rigid body interactions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NA","math.NA","physics.flu-dyn"],"primary_cat":"physics.comp-ph","authors_text":"Christoph Lehrenfeld, Henry von Wahl, Jan Heiland, Piotr Minakowski, Thomas Richter","submitted_at":"2019-08-13T13:43:37Z","abstract_excerpt":"We propose a fluid-rigid body interaction benchmark problem, consisting of a solid spherical obstacle in a Newtonian fluid, whose centre of mass is fixed but is free to rotate. A number of different problems are defined for both two and three spatial dimensions. The geometry is chosen specifically, such that the fluid-solid partition does not change over time and classical fluid solvers are able to solve the fluid-structure interaction problem. We summarise the different approaches used to handle the fluid-solid coupling and numerical methods used to solve the arising problems. The results obt"},"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":"1908.04637","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-08-13T13:43:37Z","cross_cats_sorted":["cs.NA","math.NA","physics.flu-dyn"],"title_canon_sha256":"decbab8e893de02f8a14abe799ca74c9825d89a8ce62990efcf4191751ae24fd","abstract_canon_sha256":"30843b6d2489fde8dc820970f45342b1e33d8c28e795a2623fcf8bec5f714b28"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:05:35.204719Z","signature_b64":"cjSkO/8wd4EOVhAe4uQc66aGiSpbnLWY0JO3D9Z3wTqurLFmfeMNZKqtLVxhWUXU6fuXrFX2EwN+A4/CiJ8tDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"09411987f5d999e9184243623717ddc9160215857bd660eb449cd5c4cc228340","last_reissued_at":"2026-07-05T00:05:35.204330Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:05:35.204330Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Numerical benchmarking of fluid-rigid body interactions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NA","math.NA","physics.flu-dyn"],"primary_cat":"physics.comp-ph","authors_text":"Christoph Lehrenfeld, Henry von Wahl, Jan Heiland, Piotr Minakowski, Thomas Richter","submitted_at":"2019-08-13T13:43:37Z","abstract_excerpt":"We propose a fluid-rigid body interaction benchmark problem, consisting of a solid spherical obstacle in a Newtonian fluid, whose centre of mass is fixed but is free to rotate. A number of different problems are defined for both two and three spatial dimensions. The geometry is chosen specifically, such that the fluid-solid partition does not change over time and classical fluid solvers are able to solve the fluid-structure interaction problem. We summarise the different approaches used to handle the fluid-solid coupling and numerical methods used to solve the arising problems. The results obt"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.04637","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/1908.04637/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":"1908.04637","created_at":"2026-07-05T00:05:35.204385+00:00"},{"alias_kind":"arxiv_version","alias_value":"1908.04637v2","created_at":"2026-07-05T00:05:35.204385+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.04637","created_at":"2026-07-05T00:05:35.204385+00:00"},{"alias_kind":"pith_short_12","alias_value":"BFARTB7V3GM6","created_at":"2026-07-05T00:05:35.204385+00:00"},{"alias_kind":"pith_short_16","alias_value":"BFARTB7V3GM6SGCC","created_at":"2026-07-05T00:05:35.204385+00:00"},{"alias_kind":"pith_short_8","alias_value":"BFARTB7V","created_at":"2026-07-05T00:05:35.204385+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/BFARTB7V3GM6SGCCINRDOF65ZE","json":"https://pith.science/pith/BFARTB7V3GM6SGCCINRDOF65ZE.json","graph_json":"https://pith.science/api/pith-number/BFARTB7V3GM6SGCCINRDOF65ZE/graph.json","events_json":"https://pith.science/api/pith-number/BFARTB7V3GM6SGCCINRDOF65ZE/events.json","paper":"https://pith.science/paper/BFARTB7V"},"agent_actions":{"view_html":"https://pith.science/pith/BFARTB7V3GM6SGCCINRDOF65ZE","download_json":"https://pith.science/pith/BFARTB7V3GM6SGCCINRDOF65ZE.json","view_paper":"https://pith.science/paper/BFARTB7V","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1908.04637&json=true","fetch_graph":"https://pith.science/api/pith-number/BFARTB7V3GM6SGCCINRDOF65ZE/graph.json","fetch_events":"https://pith.science/api/pith-number/BFARTB7V3GM6SGCCINRDOF65ZE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BFARTB7V3GM6SGCCINRDOF65ZE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BFARTB7V3GM6SGCCINRDOF65ZE/action/storage_attestation","attest_author":"https://pith.science/pith/BFARTB7V3GM6SGCCINRDOF65ZE/action/author_attestation","sign_citation":"https://pith.science/pith/BFARTB7V3GM6SGCCINRDOF65ZE/action/citation_signature","submit_replication":"https://pith.science/pith/BFARTB7V3GM6SGCCINRDOF65ZE/action/replication_record"}},"created_at":"2026-07-05T00:05:35.204385+00:00","updated_at":"2026-07-05T00:05:35.204385+00:00"}