{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:Y35TOBP24FPXD3EN6K3GKXI6A4","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":"0b29ee650422d1becceee4915559ffc817f375c28ff308a7d2c60df5e1fba9cc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-12-20T14:54:46Z","title_canon_sha256":"e493ff1a7f2d74b6ec7886802f1e387eaf5d0e19417f6339204bcd3a3aee9d05"},"schema_version":"1.0","source":{"id":"1712.07506","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.07506","created_at":"2026-05-18T00:21:08Z"},{"alias_kind":"arxiv_version","alias_value":"1712.07506v1","created_at":"2026-05-18T00:21:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.07506","created_at":"2026-05-18T00:21:08Z"},{"alias_kind":"pith_short_12","alias_value":"Y35TOBP24FPX","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"Y35TOBP24FPXD3EN","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"Y35TOBP2","created_at":"2026-05-18T12:31:56Z"}],"graph_snapshots":[{"event_id":"sha256:2a211540d7b794c83e03545ca538b34a11f473e6d38e7035b54845d9287a9cee","target":"graph","created_at":"2026-05-18T00:21:08Z","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":"The radial relative velocity between particles suspended in turbulent flow plays a critical role in droplet collision and growth. We present a simple and accurate approach to RV measurement in isotropic turbulence - planar 4-frame particle tracking velocimetry - using routine PIV hardware. This study demonstrates the feasibility of accurately measuring RV using routine hardware and verifies, for the first time, the path-history and inertial filtering effects on particle-pair RV at large particle separations experimentally.","authors_text":"Andrew D. Bragg, Hui Meng, Lance R. Collins, Peter J. Ireland, Zach Liang, Zhongwang Dou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-12-20T14:54:46Z","title":"Particle-Pair Relative Velocity Measurement in High-Reynolds-Number Homogeneous and Isotropic Turbulence Using 4-Frame Particle Tracking Velocimetry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.07506","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":"sha256:85f1f9533f9bf4c3733ec70ab56b446e1a5a91388faf2b691cd6a99f887cd18f","target":"record","created_at":"2026-05-18T00:21:08Z","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":"0b29ee650422d1becceee4915559ffc817f375c28ff308a7d2c60df5e1fba9cc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-12-20T14:54:46Z","title_canon_sha256":"e493ff1a7f2d74b6ec7886802f1e387eaf5d0e19417f6339204bcd3a3aee9d05"},"schema_version":"1.0","source":{"id":"1712.07506","kind":"arxiv","version":1}},"canonical_sha256":"c6fb3705fae15f71ec8df2b6655d1e073e280dbdf452abef20602baeeec7af4e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c6fb3705fae15f71ec8df2b6655d1e073e280dbdf452abef20602baeeec7af4e","first_computed_at":"2026-05-18T00:21:08.958168Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:08.958168Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RFGzqV3BOt9449tue6RwXWQLN1mZHwmbM+rS+ftVzhEaQpZxkbNcrOLj8zLPnyU1O4+yC+5lrEV1Ynoi6MndDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:08.958571Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.07506","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:85f1f9533f9bf4c3733ec70ab56b446e1a5a91388faf2b691cd6a99f887cd18f","sha256:2a211540d7b794c83e03545ca538b34a11f473e6d38e7035b54845d9287a9cee"],"state_sha256":"f7dc2fcb6de91058c0203a251926bb540356f187d34ead1db831725e2fff5396"}