{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:BNNPZJ2Q56OJBGOOYRODMQRPN7","short_pith_number":"pith:BNNPZJ2Q","canonical_record":{"source":{"id":"2501.14699","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-01-24T18:22:22Z","cross_cats_sorted":["cs.NA","math.NA","physics.comp-ph"],"title_canon_sha256":"05c44dc2c316da4c713b0b48415821d6fff8b57118067e9e8701435e3b2a88af","abstract_canon_sha256":"dd73a83ef94106508dffaf7c8cbd818354fd63241bbbd6440ee9c42e8fdb2739"},"schema_version":"1.0"},"canonical_sha256":"0b5afca750ef9c9099cec45c36422f6fe7910423c2c8c866af393633feb0cc7f","source":{"kind":"arxiv","id":"2501.14699","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.14699","created_at":"2026-07-05T10:05:04Z"},{"alias_kind":"arxiv_version","alias_value":"2501.14699v1","created_at":"2026-07-05T10:05:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.14699","created_at":"2026-07-05T10:05:04Z"},{"alias_kind":"pith_short_12","alias_value":"BNNPZJ2Q56OJ","created_at":"2026-07-05T10:05:04Z"},{"alias_kind":"pith_short_16","alias_value":"BNNPZJ2Q56OJBGOO","created_at":"2026-07-05T10:05:04Z"},{"alias_kind":"pith_short_8","alias_value":"BNNPZJ2Q","created_at":"2026-07-05T10:05:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:BNNPZJ2Q56OJBGOOYRODMQRPN7","target":"record","payload":{"canonical_record":{"source":{"id":"2501.14699","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-01-24T18:22:22Z","cross_cats_sorted":["cs.NA","math.NA","physics.comp-ph"],"title_canon_sha256":"05c44dc2c316da4c713b0b48415821d6fff8b57118067e9e8701435e3b2a88af","abstract_canon_sha256":"dd73a83ef94106508dffaf7c8cbd818354fd63241bbbd6440ee9c42e8fdb2739"},"schema_version":"1.0"},"canonical_sha256":"0b5afca750ef9c9099cec45c36422f6fe7910423c2c8c866af393633feb0cc7f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:05:04.423473Z","signature_b64":"bG7HBndJd3QZ1fuxAK7lrutTIWtRlV9KfCkul7wJANVYgFACBvKyFlWG/XkBaBthza96/syWHzyfhwqLrq0zCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0b5afca750ef9c9099cec45c36422f6fe7910423c2c8c866af393633feb0cc7f","last_reissued_at":"2026-07-05T10:05:04.423123Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:05:04.423123Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2501.14699","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":"2026-07-05T10:05:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DFqs7CuGeze/S/x1VH7Hdo5Qx/AoFCdwfNOGYf++HJBEywIY6pnKtOyjaderwC5HOWASHlE5t6Z5IhOspTXXCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T00:39:06.769862Z"},"content_sha256":"bdd1c0646b3b4a30224aff4dfe3d83ce1bb699c06ddb56542c1720e67c6cbb6a","schema_version":"1.0","event_id":"sha256:bdd1c0646b3b4a30224aff4dfe3d83ce1bb699c06ddb56542c1720e67c6cbb6a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:BNNPZJ2Q56OJBGOOYRODMQRPN7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Acceleration of RANS Solver Convergence via Initialization with Wake Extension Models","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":["cs.NA","math.NA","physics.comp-ph"],"primary_cat":"physics.flu-dyn","authors_text":"Christopher R. Schrock, Eric M. Wolf, Kazuko W. Fuchi, Philip S. Beran","submitted_at":"2025-01-24T18:22:22Z","abstract_excerpt":"Use of appropriate initialization to warm-start Reynolds-averaged Navier-Stokes (RANS) simulations of turbulent flow can facilitate convergence and lead to efficient use of computational resources. In this work, a method to model downstream wake development in external turbulent flow is proposed and used for RANS solver convergence acceleration. To balance the model accuracy and cost, the proposed method divides the analysis domain into three regions: near-body, wake and off-body. An approach based on a convolutional neural network is introduced as an efficient method to predict the downstream"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.14699","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/2501.14699/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":"2026-07-05T10:05:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3N6weMcUpAcaEsU05gxQWx7omXnmoISFoy7L0IEx3dfTeNTLVNxkYwCssVy16Uj7OSaW5HTzXUet5zVYV0tXDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T00:39:06.770182Z"},"content_sha256":"4d69dafaa077a80463c339a82ef218659197099701361a2e83d4cb8d306bda8b","schema_version":"1.0","event_id":"sha256:4d69dafaa077a80463c339a82ef218659197099701361a2e83d4cb8d306bda8b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BNNPZJ2Q56OJBGOOYRODMQRPN7/bundle.json","state_url":"https://pith.science/pith/BNNPZJ2Q56OJBGOOYRODMQRPN7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BNNPZJ2Q56OJBGOOYRODMQRPN7/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":"2026-08-15T00:39:06Z","links":{"resolver":"https://pith.science/pith/BNNPZJ2Q56OJBGOOYRODMQRPN7","bundle":"https://pith.science/pith/BNNPZJ2Q56OJBGOOYRODMQRPN7/bundle.json","state":"https://pith.science/pith/BNNPZJ2Q56OJBGOOYRODMQRPN7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BNNPZJ2Q56OJBGOOYRODMQRPN7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:BNNPZJ2Q56OJBGOOYRODMQRPN7","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":"dd73a83ef94106508dffaf7c8cbd818354fd63241bbbd6440ee9c42e8fdb2739","cross_cats_sorted":["cs.NA","math.NA","physics.comp-ph"],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-01-24T18:22:22Z","title_canon_sha256":"05c44dc2c316da4c713b0b48415821d6fff8b57118067e9e8701435e3b2a88af"},"schema_version":"1.0","source":{"id":"2501.14699","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.14699","created_at":"2026-07-05T10:05:04Z"},{"alias_kind":"arxiv_version","alias_value":"2501.14699v1","created_at":"2026-07-05T10:05:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.14699","created_at":"2026-07-05T10:05:04Z"},{"alias_kind":"pith_short_12","alias_value":"BNNPZJ2Q56OJ","created_at":"2026-07-05T10:05:04Z"},{"alias_kind":"pith_short_16","alias_value":"BNNPZJ2Q56OJBGOO","created_at":"2026-07-05T10:05:04Z"},{"alias_kind":"pith_short_8","alias_value":"BNNPZJ2Q","created_at":"2026-07-05T10:05:04Z"}],"graph_snapshots":[{"event_id":"sha256:4d69dafaa077a80463c339a82ef218659197099701361a2e83d4cb8d306bda8b","target":"graph","created_at":"2026-07-05T10:05:04Z","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/2501.14699/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Use of appropriate initialization to warm-start Reynolds-averaged Navier-Stokes (RANS) simulations of turbulent flow can facilitate convergence and lead to efficient use of computational resources. In this work, a method to model downstream wake development in external turbulent flow is proposed and used for RANS solver convergence acceleration. To balance the model accuracy and cost, the proposed method divides the analysis domain into three regions: near-body, wake and off-body. An approach based on a convolutional neural network is introduced as an efficient method to predict the downstream","authors_text":"Christopher R. Schrock, Eric M. Wolf, Kazuko W. Fuchi, Philip S. Beran","cross_cats":["cs.NA","math.NA","physics.comp-ph"],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-01-24T18:22:22Z","title":"Acceleration of RANS Solver Convergence via Initialization with Wake Extension Models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.14699","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:bdd1c0646b3b4a30224aff4dfe3d83ce1bb699c06ddb56542c1720e67c6cbb6a","target":"record","created_at":"2026-07-05T10:05:04Z","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":"dd73a83ef94106508dffaf7c8cbd818354fd63241bbbd6440ee9c42e8fdb2739","cross_cats_sorted":["cs.NA","math.NA","physics.comp-ph"],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-01-24T18:22:22Z","title_canon_sha256":"05c44dc2c316da4c713b0b48415821d6fff8b57118067e9e8701435e3b2a88af"},"schema_version":"1.0","source":{"id":"2501.14699","kind":"arxiv","version":1}},"canonical_sha256":"0b5afca750ef9c9099cec45c36422f6fe7910423c2c8c866af393633feb0cc7f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0b5afca750ef9c9099cec45c36422f6fe7910423c2c8c866af393633feb0cc7f","first_computed_at":"2026-07-05T10:05:04.423123Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:05:04.423123Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bG7HBndJd3QZ1fuxAK7lrutTIWtRlV9KfCkul7wJANVYgFACBvKyFlWG/XkBaBthza96/syWHzyfhwqLrq0zCA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:05:04.423473Z","signed_message":"canonical_sha256_bytes"},"source_id":"2501.14699","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bdd1c0646b3b4a30224aff4dfe3d83ce1bb699c06ddb56542c1720e67c6cbb6a","sha256:4d69dafaa077a80463c339a82ef218659197099701361a2e83d4cb8d306bda8b"],"state_sha256":"dfd3dc093c6f13aa7d1cfe99a9f136a9666adb30bf5be75f29565d50b024acd8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2uc5F30FsyHkf2FsCUxs13YoHnE3sYM7nhek7kf301cBKAyaL13q6OwIMPy6W9RinE14rgS7QhSZCxFWfVXvCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T00:39:06.772616Z","bundle_sha256":"8f6412af56a692eba993c0b6adc67ca5ada758055ba14d57b284525b261792cc"}}