{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:HU7PJ6LF4RQOCPYDNFV2H5CWYE","short_pith_number":"pith:HU7PJ6LF","schema_version":"1.0","canonical_sha256":"3d3ef4f965e460e13f03696ba3f456c10aced8b0667ee7aa9c361e2313bbea80","source":{"kind":"arxiv","id":"2604.22150","version":2},"attestation_state":"computed","paper":{"title":"Waves dictate the yo-yoing decay of a viscoelastic mixing layer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Waves develop in decaying viscoelastic mixing layers and drive oscillatory yo-yoing of the mean flow.","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Giulio Foggi Rota, Jason Tang, Marco Edoardo Rosti, Piyush Garg","submitted_at":"2026-04-24T01:41:52Z","abstract_excerpt":"We find that waves develop in a time-decaying mixing layer of viscoelastic fluid, leading the mean-flow to yo-yo. This is in sharp contrast with Newtonian fluids, where laminar mixing layers evolve monotonically. We combine direct numerical simulations with a theoretical analysis of the energy budget for the flow to uncover the underlying physical mechanism. The yo-yoing of the mean-flow is shown to be driven by the elastic polymers injecting energy into the fluid and, in turn, being rotated by the large-scale mean shear. We then provide the mathematical model of the problem and solve it analy"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2604.22150","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-04-24T01:41:52Z","cross_cats_sorted":[],"title_canon_sha256":"d35c9a02c5c59d0505e073707f4d86c8d0fece894a277cbac4b3634261595a38","abstract_canon_sha256":"51bc7d6db6735e3112ee381d0e7332438bcb72e24f14a0db06b2600685761a5e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-24T01:14:27.969499Z","signature_b64":"9M6/XG7v+yLsOeCTryl/mfOC1ibjb0wiAlzu+64lvKliZRCeIXROEVOXqF/f141FetPsr0Ywlu1lZbxhnBVZDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3d3ef4f965e460e13f03696ba3f456c10aced8b0667ee7aa9c361e2313bbea80","last_reissued_at":"2026-06-24T01:14:27.969129Z","signature_status":"signed_v1","first_computed_at":"2026-06-24T01:14:27.969129Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Waves dictate the yo-yoing decay of a viscoelastic mixing layer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Waves develop in decaying viscoelastic mixing layers and drive oscillatory yo-yoing of the mean flow.","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Giulio Foggi Rota, Jason Tang, Marco Edoardo Rosti, Piyush Garg","submitted_at":"2026-04-24T01:41:52Z","abstract_excerpt":"We find that waves develop in a time-decaying mixing layer of viscoelastic fluid, leading the mean-flow to yo-yo. This is in sharp contrast with Newtonian fluids, where laminar mixing layers evolve monotonically. We combine direct numerical simulations with a theoretical analysis of the energy budget for the flow to uncover the underlying physical mechanism. The yo-yoing of the mean-flow is shown to be driven by the elastic polymers injecting energy into the fluid and, in turn, being rotated by the large-scale mean shear. We then provide the mathematical model of the problem and solve it analy"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Waves develop in a time-decaying mixing layer of viscoelastic fluid, leading the mean-flow to yo-yo; the yo-yoing is driven by the elastic polymers injecting energy into the fluid and, in turn, being rotated by the large-scale mean shear, with analytical wave solutions with non-linear dispersion predicting the period of the yo-yoing and the parameter range where it occurs.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that the chosen viscoelastic constitutive model (implied by elastic polymers and energy budget) and the direct numerical simulations accurately capture the polymer dynamics without numerical artifacts or model-specific artifacts driving the observed waves and yo-yoing.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Waves in viscoelastic mixing layers drive yo-yoing mean-flow decay through elastic energy injection and shear-induced polymer rotation, with analytical wave solutions predicting the oscillation period and occurrence range.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Waves develop in decaying viscoelastic mixing layers and drive oscillatory yo-yoing of the mean flow.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"490b3aab6f5b270fa41eb179ee140dbd2cd84630493ab4c3dd8a722febf0b3b7"},"source":{"id":"2604.22150","kind":"arxiv","version":2},"verdict":{"id":"86f1365e-bba0-45d6-9a01-b4fb9cfd2040","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-08T10:23:33.706248Z","strongest_claim":"Waves develop in a time-decaying mixing layer of viscoelastic fluid, leading the mean-flow to yo-yo; the yo-yoing is driven by the elastic polymers injecting energy into the fluid and, in turn, being rotated by the large-scale mean shear, with analytical wave solutions with non-linear dispersion predicting the period of the yo-yoing and the parameter range where it occurs.","one_line_summary":"Waves in viscoelastic mixing layers drive yo-yoing mean-flow decay through elastic energy injection and shear-induced polymer rotation, with analytical wave solutions predicting the oscillation period and occurrence range.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that the chosen viscoelastic constitutive model (implied by elastic polymers and energy budget) and the direct numerical simulations accurately capture the polymer dynamics without numerical artifacts or model-specific artifacts driving the observed waves and yo-yoing.","pith_extraction_headline":"Waves develop in decaying viscoelastic mixing layers and drive oscillatory yo-yoing of the mean flow."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.22150/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-21T11:36:01.060772Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-20T00:13:59.001805Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"b60bd4b3c6b987306ce227f644f30f27ddff4cdee835b7c9e3347fca5e124abd"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2604.22150","created_at":"2026-06-24T01:14:27.969181+00:00"},{"alias_kind":"arxiv_version","alias_value":"2604.22150v2","created_at":"2026-06-24T01:14:27.969181+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2604.22150","created_at":"2026-06-24T01:14:27.969181+00:00"},{"alias_kind":"pith_short_12","alias_value":"HU7PJ6LF4RQO","created_at":"2026-06-24T01:14:27.969181+00:00"},{"alias_kind":"pith_short_16","alias_value":"HU7PJ6LF4RQOCPYD","created_at":"2026-06-24T01:14:27.969181+00:00"},{"alias_kind":"pith_short_8","alias_value":"HU7PJ6LF","created_at":"2026-06-24T01:14:27.969181+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/HU7PJ6LF4RQOCPYDNFV2H5CWYE","json":"https://pith.science/pith/HU7PJ6LF4RQOCPYDNFV2H5CWYE.json","graph_json":"https://pith.science/api/pith-number/HU7PJ6LF4RQOCPYDNFV2H5CWYE/graph.json","events_json":"https://pith.science/api/pith-number/HU7PJ6LF4RQOCPYDNFV2H5CWYE/events.json","paper":"https://pith.science/paper/HU7PJ6LF"},"agent_actions":{"view_html":"https://pith.science/pith/HU7PJ6LF4RQOCPYDNFV2H5CWYE","download_json":"https://pith.science/pith/HU7PJ6LF4RQOCPYDNFV2H5CWYE.json","view_paper":"https://pith.science/paper/HU7PJ6LF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2604.22150&json=true","fetch_graph":"https://pith.science/api/pith-number/HU7PJ6LF4RQOCPYDNFV2H5CWYE/graph.json","fetch_events":"https://pith.science/api/pith-number/HU7PJ6LF4RQOCPYDNFV2H5CWYE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HU7PJ6LF4RQOCPYDNFV2H5CWYE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HU7PJ6LF4RQOCPYDNFV2H5CWYE/action/storage_attestation","attest_author":"https://pith.science/pith/HU7PJ6LF4RQOCPYDNFV2H5CWYE/action/author_attestation","sign_citation":"https://pith.science/pith/HU7PJ6LF4RQOCPYDNFV2H5CWYE/action/citation_signature","submit_replication":"https://pith.science/pith/HU7PJ6LF4RQOCPYDNFV2H5CWYE/action/replication_record"}},"created_at":"2026-06-24T01:14:27.969181+00:00","updated_at":"2026-06-24T01:14:27.969181+00:00"}