{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:SANZOCCP7H6PTDTIQD625B2D5Y","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":"e249b51310ab2bbeee06bbc8082a01268fe10ea55d3283b89050e8d3f698b977","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-09-22T16:17:12Z","title_canon_sha256":"0ee8f7259f55cbbee67c20f1e38d393d9e908ab28381ce5d27f77e88fa6c30d0"},"schema_version":"1.0","source":{"id":"1709.07831","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.07831","created_at":"2026-05-18T00:22:10Z"},{"alias_kind":"arxiv_version","alias_value":"1709.07831v2","created_at":"2026-05-18T00:22:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.07831","created_at":"2026-05-18T00:22:10Z"},{"alias_kind":"pith_short_12","alias_value":"SANZOCCP7H6P","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SANZOCCP7H6PTDTI","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SANZOCCP","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:de036264c3623989c4cac275e6f9786448df98cd520350cfb2ccbd0004c9e36d","target":"graph","created_at":"2026-05-18T00:22:10Z","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":"This paper studies the mechanisms of dispersion in the laminar flow through the pore space of a $3$-dimensional porous medium. We focus on pre-asymptotic transport prior to the asymptotic hydrodynamic dispersion regime, in which solute motion may be described by the average flow velocity and a hydrodynamic dispersion coefficient. High performance numerical flow and transport simulations of solute breakthrough at the outlet of a sand-like porous medium evidence marked deviations from the hydrodynamic dispersion paradigm and identifies two distinct regimes. The first regime is characterized by a","authors_text":"Juan J. Hidalgo, Marco Dentz, Matteo Icardi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-09-22T16:17:12Z","title":"Mechanisms of Dispersion in a Porous Medium"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.07831","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":"sha256:3c2cadb6fa727e99fc000d54659dda5ca502d1ae4faf7887f721e7d3724619e3","target":"record","created_at":"2026-05-18T00:22:10Z","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":"e249b51310ab2bbeee06bbc8082a01268fe10ea55d3283b89050e8d3f698b977","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-09-22T16:17:12Z","title_canon_sha256":"0ee8f7259f55cbbee67c20f1e38d393d9e908ab28381ce5d27f77e88fa6c30d0"},"schema_version":"1.0","source":{"id":"1709.07831","kind":"arxiv","version":2}},"canonical_sha256":"901b97084ff9fcf98e6880fdae8743ee21c19df0ab651b7c15d11552c27b86f2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"901b97084ff9fcf98e6880fdae8743ee21c19df0ab651b7c15d11552c27b86f2","first_computed_at":"2026-05-18T00:22:10.713249Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:22:10.713249Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sJbR6n4HeAGREkeCqYwXzu4SEGuxHm5w+Nhf0faWBmx4IHvCVFmfQjkFyoIRZqzifjGmKvY3KqRdtPojUCgHAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:22:10.713859Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.07831","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3c2cadb6fa727e99fc000d54659dda5ca502d1ae4faf7887f721e7d3724619e3","sha256:de036264c3623989c4cac275e6f9786448df98cd520350cfb2ccbd0004c9e36d"],"state_sha256":"27118b56ebbaa7a70952e54474fc9dbab0b09b5aabd846f86b617f7118d2cf08"}