{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"9e4d320686e81f1d9c98444e0df377aa7c52e506d80170dfaf093c796178f15a","created":"2026-10-03T07:18:03Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"486e60f4b88d6ab1daa69c7b243aa13fed1094feeb07be73d4f7cfefbda4ba06","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"mechanism","assisted_by":[],"external_id":"fluid.2d-turbulence.inverse-cascade-intermittency","kind":"phenomenon","literature_status":"open","n":"1","parents":[],"plain":"In three-dimensional turbulence rare violent events dominate high-order statistics, but the energy flow to large scales in flat turbulence shows no growth of such events with decreasing scale. The reason for this difference is not known.","posed_since":"2000","precise":"In the inverse energy cascade of forced 2D Navier-Stokes turbulence, velocity-increment exponents are $\\zeta_p = p/3$ within error, and increment distributions are self-similar though measurably non-Gaussian (Boffetta, Celani, Vergassola 2000). Explain the absence of anomalous scaling from the dynamics, and determine whether small deviations exist at high order or for other forcing protocols.","problem_ref":null,"references":"","settled_by":"A theory predicting $\\zeta_{p} = p/3$ or specific small corrections, checked against DNS at resolutions above $16384^{2}$.","status_note":"","title":"Why is the two-dimensional inverse energy cascade non-intermittent?","topic_ref":"0182f1f595a8d4484a77534cfdcf00e164a201f0557ef3e8a7e29298531a113e"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"cffd85b0268bbab3bd420f617e6ab05238ee3286500d4c4be9c60ad6c01bc63a","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"98ace0f271688eeb9a949ac2c5bfea2100eb6351af1139bb0823b6c23b57b7a7","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"Go6kPpE8-qeMsMAQFAR6_gbaPLZrxPU3xv2h_sUehu7Fzsyen-sm2-0SL9JUmnbA0afo1dskEMKMzLF_-vdQAw"},"schema":"pubphys.envelope/1"},"record_hash":"cffd85b0268bbab3bd420f617e6ab05238ee3286500d4c4be9c60ad6c01bc63a","leaf_index":1391}