{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:K7PUALY3MIENTBTF744VLIOPAL","short_pith_number":"pith:K7PUALY3","canonical_record":{"source":{"id":"1711.03014","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-11-08T15:26:37Z","cross_cats_sorted":[],"title_canon_sha256":"7aac86b1a97e9947b2a295db5e8cc82e1bb5307b83b4123e2d1ee9cb357b83ee","abstract_canon_sha256":"bdaf52955383206ba14aeabb61b16251e0da46fcd9943535b6c264ba71c52b50"},"schema_version":"1.0"},"canonical_sha256":"57df402f1b6208d98665ff3955a1cf02f1b78c3635591005a014a2538b8ae844","source":{"kind":"arxiv","id":"1711.03014","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.03014","created_at":"2026-05-18T00:29:07Z"},{"alias_kind":"arxiv_version","alias_value":"1711.03014v2","created_at":"2026-05-18T00:29:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.03014","created_at":"2026-05-18T00:29:07Z"},{"alias_kind":"pith_short_12","alias_value":"K7PUALY3MIEN","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"K7PUALY3MIENTBTF","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"K7PUALY3","created_at":"2026-05-18T12:31:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:K7PUALY3MIENTBTF744VLIOPAL","target":"record","payload":{"canonical_record":{"source":{"id":"1711.03014","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-11-08T15:26:37Z","cross_cats_sorted":[],"title_canon_sha256":"7aac86b1a97e9947b2a295db5e8cc82e1bb5307b83b4123e2d1ee9cb357b83ee","abstract_canon_sha256":"bdaf52955383206ba14aeabb61b16251e0da46fcd9943535b6c264ba71c52b50"},"schema_version":"1.0"},"canonical_sha256":"57df402f1b6208d98665ff3955a1cf02f1b78c3635591005a014a2538b8ae844","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:29:07.977789Z","signature_b64":"8m7Kn40bW+vqLvs4ya+62wcPlgHn12IGB3tbrl6S1/P8HXXWpSUIqYAUT+NMAv/o8lq/LHJRuT0CUhNVZ00GBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"57df402f1b6208d98665ff3955a1cf02f1b78c3635591005a014a2538b8ae844","last_reissued_at":"2026-05-18T00:29:07.977011Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:29:07.977011Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.03014","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:29:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o2Xcie9c6ZpN7np6uZ0+N0XSP0sFUfBpLQvgYsNHOuaLFlAkRACM1HP1KNGZ9AJCWsijqD0n6DJ2C5HAc7uhAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T13:22:56.077788Z"},"content_sha256":"6122a963671384a31066a64e1d8f0fc83a9ccbf63a3282eb9a86a0b1af5c0d40","schema_version":"1.0","event_id":"sha256:6122a963671384a31066a64e1d8f0fc83a9ccbf63a3282eb9a86a0b1af5c0d40"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:K7PUALY3MIENTBTF744VLIOPAL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A new subgrid characteristic length for turbulence simulations on anisotropic grids","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"A. Gorobets, A. Oliva, F. X. Trias, M. H. Silvis, R. W. C. P. Verstappen","submitted_at":"2017-11-08T15:26:37Z","abstract_excerpt":"Direct numerical simulations of the incompressible Navier-Stokes equations are not feasible yet for most practical turbulent flows. Therefore, dynamically less complex mathematical formulations are necessary for coarse-grained simulations. In this regard, eddy-viscosity models for Large-Eddy Simulation (LES) are probably the most popular example thereof. This type of models requires the calculation of a subgrid characteristic length which is usually associated with the local grid size. For isotropic grids this is equal to the mesh step. However, for anisotropic or unstructured grids, such as t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.03014","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":""},"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":"2026-05-18T00:29:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+US+G3mUzwS/XIdToo4KDUnIkXTvZoL5cJD5vX5y5V3AgR2C891p71g8iqfU5YLaNNdG28CW6wDM9xuaCoLfCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T13:22:56.078137Z"},"content_sha256":"6238d4799d613d50f5b1ae16c6d396f076bd14a173c8fac77886d215a4d978dd","schema_version":"1.0","event_id":"sha256:6238d4799d613d50f5b1ae16c6d396f076bd14a173c8fac77886d215a4d978dd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K7PUALY3MIENTBTF744VLIOPAL/bundle.json","state_url":"https://pith.science/pith/K7PUALY3MIENTBTF744VLIOPAL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K7PUALY3MIENTBTF744VLIOPAL/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":"2026-07-02T13:22:56Z","links":{"resolver":"https://pith.science/pith/K7PUALY3MIENTBTF744VLIOPAL","bundle":"https://pith.science/pith/K7PUALY3MIENTBTF744VLIOPAL/bundle.json","state":"https://pith.science/pith/K7PUALY3MIENTBTF744VLIOPAL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K7PUALY3MIENTBTF744VLIOPAL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:K7PUALY3MIENTBTF744VLIOPAL","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":"bdaf52955383206ba14aeabb61b16251e0da46fcd9943535b6c264ba71c52b50","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-11-08T15:26:37Z","title_canon_sha256":"7aac86b1a97e9947b2a295db5e8cc82e1bb5307b83b4123e2d1ee9cb357b83ee"},"schema_version":"1.0","source":{"id":"1711.03014","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.03014","created_at":"2026-05-18T00:29:07Z"},{"alias_kind":"arxiv_version","alias_value":"1711.03014v2","created_at":"2026-05-18T00:29:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.03014","created_at":"2026-05-18T00:29:07Z"},{"alias_kind":"pith_short_12","alias_value":"K7PUALY3MIEN","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"K7PUALY3MIENTBTF","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"K7PUALY3","created_at":"2026-05-18T12:31:24Z"}],"graph_snapshots":[{"event_id":"sha256:6238d4799d613d50f5b1ae16c6d396f076bd14a173c8fac77886d215a4d978dd","target":"graph","created_at":"2026-05-18T00:29:07Z","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"},"paper":{"abstract_excerpt":"Direct numerical simulations of the incompressible Navier-Stokes equations are not feasible yet for most practical turbulent flows. Therefore, dynamically less complex mathematical formulations are necessary for coarse-grained simulations. In this regard, eddy-viscosity models for Large-Eddy Simulation (LES) are probably the most popular example thereof. This type of models requires the calculation of a subgrid characteristic length which is usually associated with the local grid size. For isotropic grids this is equal to the mesh step. However, for anisotropic or unstructured grids, such as t","authors_text":"A. Gorobets, A. Oliva, F. X. Trias, M. H. Silvis, R. W. C. P. Verstappen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-11-08T15:26:37Z","title":"A new subgrid characteristic length for turbulence simulations on anisotropic grids"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.03014","kind":"arxiv","version":2},"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":"sha256:6122a963671384a31066a64e1d8f0fc83a9ccbf63a3282eb9a86a0b1af5c0d40","target":"record","created_at":"2026-05-18T00:29:07Z","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":"bdaf52955383206ba14aeabb61b16251e0da46fcd9943535b6c264ba71c52b50","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-11-08T15:26:37Z","title_canon_sha256":"7aac86b1a97e9947b2a295db5e8cc82e1bb5307b83b4123e2d1ee9cb357b83ee"},"schema_version":"1.0","source":{"id":"1711.03014","kind":"arxiv","version":2}},"canonical_sha256":"57df402f1b6208d98665ff3955a1cf02f1b78c3635591005a014a2538b8ae844","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"57df402f1b6208d98665ff3955a1cf02f1b78c3635591005a014a2538b8ae844","first_computed_at":"2026-05-18T00:29:07.977011Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:29:07.977011Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8m7Kn40bW+vqLvs4ya+62wcPlgHn12IGB3tbrl6S1/P8HXXWpSUIqYAUT+NMAv/o8lq/LHJRuT0CUhNVZ00GBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:29:07.977789Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.03014","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6122a963671384a31066a64e1d8f0fc83a9ccbf63a3282eb9a86a0b1af5c0d40","sha256:6238d4799d613d50f5b1ae16c6d396f076bd14a173c8fac77886d215a4d978dd"],"state_sha256":"b6892ef8fa4d30620a52d8c830c118fc8edd66afc8b0e2d0d6d0eecc9c8cc588"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UGxgmHnriU8lAavD/YRYThjul1swmrfLuu4zKQxC1dGbywyjUaXuJUYATrqoxH0L+2B2lyrIcMPLMYKZV/y6DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T13:22:56.080034Z","bundle_sha256":"3627cb47ceb68a81625bfcee1847ff1782e14126cd987180e3b9498d599531a1"}}