{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:ZEP3BBMRZE3LIZTJ76WHNKJAZT","short_pith_number":"pith:ZEP3BBMR","canonical_record":{"source":{"id":"2212.13831","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2022-12-28T14:27:56Z","cross_cats_sorted":[],"title_canon_sha256":"2087ca475c3dcbe19e954a2134d6f990c04c9fde4bbd1c48fa3de8964d5f4f86","abstract_canon_sha256":"b55066365cf242ef1fd457ccf3729f7c4ae85206218527d4aa8dc1b34a2546b2"},"schema_version":"1.0"},"canonical_sha256":"c91fb08591c936b46669ffac76a920cceb90bf516bbebd72daa6292c25e53835","source":{"kind":"arxiv","id":"2212.13831","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.13831","created_at":"2026-07-05T05:28:55Z"},{"alias_kind":"arxiv_version","alias_value":"2212.13831v1","created_at":"2026-07-05T05:28:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.13831","created_at":"2026-07-05T05:28:55Z"},{"alias_kind":"pith_short_12","alias_value":"ZEP3BBMRZE3L","created_at":"2026-07-05T05:28:55Z"},{"alias_kind":"pith_short_16","alias_value":"ZEP3BBMRZE3LIZTJ","created_at":"2026-07-05T05:28:55Z"},{"alias_kind":"pith_short_8","alias_value":"ZEP3BBMR","created_at":"2026-07-05T05:28:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:ZEP3BBMRZE3LIZTJ76WHNKJAZT","target":"record","payload":{"canonical_record":{"source":{"id":"2212.13831","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2022-12-28T14:27:56Z","cross_cats_sorted":[],"title_canon_sha256":"2087ca475c3dcbe19e954a2134d6f990c04c9fde4bbd1c48fa3de8964d5f4f86","abstract_canon_sha256":"b55066365cf242ef1fd457ccf3729f7c4ae85206218527d4aa8dc1b34a2546b2"},"schema_version":"1.0"},"canonical_sha256":"c91fb08591c936b46669ffac76a920cceb90bf516bbebd72daa6292c25e53835","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:28:55.491982Z","signature_b64":"Tg9PQdAC1/JLGWRQ/BWXS0L9yuh38TO+sipDQAB8awuxNkQ02OaAuQFcWtznMEY9O922Ua/LyGGxm87R+2EEDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c91fb08591c936b46669ffac76a920cceb90bf516bbebd72daa6292c25e53835","last_reissued_at":"2026-07-05T05:28:55.491577Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:28:55.491577Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2212.13831","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:28:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NMtikBC/DePbFvegQRynGkYPw3W1uz8pUy7ZAYBgyodX21irmRtu3WHXzqq58Wy53AOfh1/rK5NYKZVT7PGxBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T18:39:01.531085Z"},"content_sha256":"843b2b83c7a069802e45be86a4a93188d115bebe8259f8b2e37126f48827b721","schema_version":"1.0","event_id":"sha256:843b2b83c7a069802e45be86a4a93188d115bebe8259f8b2e37126f48827b721"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:ZEP3BBMRZE3LIZTJ76WHNKJAZT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multigrid sequential data assimilation for the large-eddy simulation of a massively separated bluff-body flow","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Alessandro Mariotti, Gabriel Moldovan, Guillaume Lehnasch, Laurent Cordier, Marcello Meldi, Maria - Vittoria Salvetti","submitted_at":"2022-12-28T14:27:56Z","abstract_excerpt":"The potential for data-driven applications to scale-resolving simulations of turbulent flows is assessed herein. Multigrid sequential data assimilation algorithms have been used to calibrate solvers for Large Eddy Simulation for the analysis of the high-Reynolds-number flow around a rectangular cylinder of aspect ratio 5:1. This test case has been chosen because of a number of physical complexities which elude accurate representation using reduced-order numerical simulation. The results for the statistical moments of the velocity and pressure flow field show that the data-driven techniques emp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.13831","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/2212.13831/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:28:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Fv5hpa3vzjQtD/OrBfQSvw2AEOa79muM8MHVr+BwYpT/muyygQAxKzOBXunPrDVCnifVC325Uj79umjILdh2CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T18:39:01.531598Z"},"content_sha256":"014a0e5daab2ff68703605329297c804c738c62da3e1f425a57dce54c0b790b9","schema_version":"1.0","event_id":"sha256:014a0e5daab2ff68703605329297c804c738c62da3e1f425a57dce54c0b790b9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZEP3BBMRZE3LIZTJ76WHNKJAZT/bundle.json","state_url":"https://pith.science/pith/ZEP3BBMRZE3LIZTJ76WHNKJAZT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZEP3BBMRZE3LIZTJ76WHNKJAZT/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-23T18:39:01Z","links":{"resolver":"https://pith.science/pith/ZEP3BBMRZE3LIZTJ76WHNKJAZT","bundle":"https://pith.science/pith/ZEP3BBMRZE3LIZTJ76WHNKJAZT/bundle.json","state":"https://pith.science/pith/ZEP3BBMRZE3LIZTJ76WHNKJAZT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZEP3BBMRZE3LIZTJ76WHNKJAZT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:ZEP3BBMRZE3LIZTJ76WHNKJAZT","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":"b55066365cf242ef1fd457ccf3729f7c4ae85206218527d4aa8dc1b34a2546b2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2022-12-28T14:27:56Z","title_canon_sha256":"2087ca475c3dcbe19e954a2134d6f990c04c9fde4bbd1c48fa3de8964d5f4f86"},"schema_version":"1.0","source":{"id":"2212.13831","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.13831","created_at":"2026-07-05T05:28:55Z"},{"alias_kind":"arxiv_version","alias_value":"2212.13831v1","created_at":"2026-07-05T05:28:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.13831","created_at":"2026-07-05T05:28:55Z"},{"alias_kind":"pith_short_12","alias_value":"ZEP3BBMRZE3L","created_at":"2026-07-05T05:28:55Z"},{"alias_kind":"pith_short_16","alias_value":"ZEP3BBMRZE3LIZTJ","created_at":"2026-07-05T05:28:55Z"},{"alias_kind":"pith_short_8","alias_value":"ZEP3BBMR","created_at":"2026-07-05T05:28:55Z"}],"graph_snapshots":[{"event_id":"sha256:014a0e5daab2ff68703605329297c804c738c62da3e1f425a57dce54c0b790b9","target":"graph","created_at":"2026-07-05T05:28:55Z","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/2212.13831/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The potential for data-driven applications to scale-resolving simulations of turbulent flows is assessed herein. Multigrid sequential data assimilation algorithms have been used to calibrate solvers for Large Eddy Simulation for the analysis of the high-Reynolds-number flow around a rectangular cylinder of aspect ratio 5:1. This test case has been chosen because of a number of physical complexities which elude accurate representation using reduced-order numerical simulation. The results for the statistical moments of the velocity and pressure flow field show that the data-driven techniques emp","authors_text":"Alessandro Mariotti, Gabriel Moldovan, Guillaume Lehnasch, Laurent Cordier, Marcello Meldi, Maria - Vittoria Salvetti","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2022-12-28T14:27:56Z","title":"Multigrid sequential data assimilation for the large-eddy simulation of a massively separated bluff-body flow"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.13831","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":"sha256:843b2b83c7a069802e45be86a4a93188d115bebe8259f8b2e37126f48827b721","target":"record","created_at":"2026-07-05T05:28:55Z","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":"b55066365cf242ef1fd457ccf3729f7c4ae85206218527d4aa8dc1b34a2546b2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2022-12-28T14:27:56Z","title_canon_sha256":"2087ca475c3dcbe19e954a2134d6f990c04c9fde4bbd1c48fa3de8964d5f4f86"},"schema_version":"1.0","source":{"id":"2212.13831","kind":"arxiv","version":1}},"canonical_sha256":"c91fb08591c936b46669ffac76a920cceb90bf516bbebd72daa6292c25e53835","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c91fb08591c936b46669ffac76a920cceb90bf516bbebd72daa6292c25e53835","first_computed_at":"2026-07-05T05:28:55.491577Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:28:55.491577Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Tg9PQdAC1/JLGWRQ/BWXS0L9yuh38TO+sipDQAB8awuxNkQ02OaAuQFcWtznMEY9O922Ua/LyGGxm87R+2EEDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:28:55.491982Z","signed_message":"canonical_sha256_bytes"},"source_id":"2212.13831","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:843b2b83c7a069802e45be86a4a93188d115bebe8259f8b2e37126f48827b721","sha256:014a0e5daab2ff68703605329297c804c738c62da3e1f425a57dce54c0b790b9"],"state_sha256":"0898745e7bca38868a0a56187955b228e21f4a76426cdc32b5a595ba65b5eba3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Fd9CiVEszlRhz+uttDX9zH/j8XAnLCKfLjgjuZkJD2VvNAEdQAa6TSm7QNHyne5MwYDN0zB/G3XEtY8cU7+XAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T18:39:01.535310Z","bundle_sha256":"af84e8145e2b13394514d37ab573b1bd99b5fb882f0d0cb346f061ac77de9733"}}