{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:AC34WJI7IPYIKUVXJMKOOVWBZO","short_pith_number":"pith:AC34WJI7","schema_version":"1.0","canonical_sha256":"00b7cb251f43f08552b74b14e756c1cb9fa0eba88b309928f29d63e19c9f823e","source":{"kind":"arxiv","id":"2601.04590","version":1},"attestation_state":"computed","paper":{"title":"Low-wavenumber wall pressure fluctuations in turbulent flows within concentric annular ducts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Benshuai Lyu, Taiyang Wang, Yaomin Zhao","submitted_at":"2026-01-08T04:38:24Z","abstract_excerpt":"Compressible direct numerical simulations of turbulent channel flows in concentric annular ducts of height $2\\delta$ are performed to study the low-wavenumber wall pressure fluctuations (WPF) over cylindrical walls at a bulk Mach number $M_b = 0.4$ and bulk Reynolds number $Re_b=3000$. The radius of the inner cylinder $R$ is varied between $0.2\\delta$, $\\delta$, $2\\delta$ and $\\infty$. As $R$ decreases, the one-point power spectral density of the WPF decreases at intermediate but increases at high frequencies. When $R$ decreases, the 1D (streamwise) wavenumber-frequency spectrum of the WPF dec"},"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":"2601.04590","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-01-08T04:38:24Z","cross_cats_sorted":[],"title_canon_sha256":"2cf1b357ac7bd04debc0c854a5ed7c963a46d8a357a16a8fde8f2f3007eb8a6d","abstract_canon_sha256":"90bc81d121d7ad191f443449931434291f3b8426760a088abf79a4d7bd4b3200"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-24T14:15:54.226899Z","signature_b64":"Ghq5VAA7vAH9mnJ8nQN8+ilTimvxK5Z/g4pigue92wxtpOairE7FtNY9Py/I15mmLo8k/gCxzrQRYbYTvTgAAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"00b7cb251f43f08552b74b14e756c1cb9fa0eba88b309928f29d63e19c9f823e","last_reissued_at":"2026-06-24T14:15:54.226391Z","signature_status":"signed_v1","first_computed_at":"2026-06-24T14:15:54.226391Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Low-wavenumber wall pressure fluctuations in turbulent flows within concentric annular ducts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Benshuai Lyu, Taiyang Wang, Yaomin Zhao","submitted_at":"2026-01-08T04:38:24Z","abstract_excerpt":"Compressible direct numerical simulations of turbulent channel flows in concentric annular ducts of height $2\\delta$ are performed to study the low-wavenumber wall pressure fluctuations (WPF) over cylindrical walls at a bulk Mach number $M_b = 0.4$ and bulk Reynolds number $Re_b=3000$. The radius of the inner cylinder $R$ is varied between $0.2\\delta$, $\\delta$, $2\\delta$ and $\\infty$. As $R$ decreases, the one-point power spectral density of the WPF decreases at intermediate but increases at high frequencies. When $R$ decreases, the 1D (streamwise) wavenumber-frequency spectrum of the WPF dec"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2601.04590","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/2601.04590/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2601.04590","created_at":"2026-06-24T14:15:54.226464+00:00"},{"alias_kind":"arxiv_version","alias_value":"2601.04590v1","created_at":"2026-06-24T14:15:54.226464+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2601.04590","created_at":"2026-06-24T14:15:54.226464+00:00"},{"alias_kind":"pith_short_12","alias_value":"AC34WJI7IPYI","created_at":"2026-06-24T14:15:54.226464+00:00"},{"alias_kind":"pith_short_16","alias_value":"AC34WJI7IPYIKUVX","created_at":"2026-06-24T14:15:54.226464+00:00"},{"alias_kind":"pith_short_8","alias_value":"AC34WJI7","created_at":"2026-06-24T14:15:54.226464+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/AC34WJI7IPYIKUVXJMKOOVWBZO","json":"https://pith.science/pith/AC34WJI7IPYIKUVXJMKOOVWBZO.json","graph_json":"https://pith.science/api/pith-number/AC34WJI7IPYIKUVXJMKOOVWBZO/graph.json","events_json":"https://pith.science/api/pith-number/AC34WJI7IPYIKUVXJMKOOVWBZO/events.json","paper":"https://pith.science/paper/AC34WJI7"},"agent_actions":{"view_html":"https://pith.science/pith/AC34WJI7IPYIKUVXJMKOOVWBZO","download_json":"https://pith.science/pith/AC34WJI7IPYIKUVXJMKOOVWBZO.json","view_paper":"https://pith.science/paper/AC34WJI7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2601.04590&json=true","fetch_graph":"https://pith.science/api/pith-number/AC34WJI7IPYIKUVXJMKOOVWBZO/graph.json","fetch_events":"https://pith.science/api/pith-number/AC34WJI7IPYIKUVXJMKOOVWBZO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/AC34WJI7IPYIKUVXJMKOOVWBZO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/AC34WJI7IPYIKUVXJMKOOVWBZO/action/storage_attestation","attest_author":"https://pith.science/pith/AC34WJI7IPYIKUVXJMKOOVWBZO/action/author_attestation","sign_citation":"https://pith.science/pith/AC34WJI7IPYIKUVXJMKOOVWBZO/action/citation_signature","submit_replication":"https://pith.science/pith/AC34WJI7IPYIKUVXJMKOOVWBZO/action/replication_record"}},"created_at":"2026-06-24T14:15:54.226464+00:00","updated_at":"2026-06-24T14:15:54.226464+00:00"}