{"paper":{"title":"Sweeping effect and Taylor's hypothesis via correlation function","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Abhishek Kumar, Akanksha Gupta, Mahendra Kumar Verma","submitted_at":"2019-06-09T17:37:20Z","abstract_excerpt":"We demonstrate the sweeping effect in turbulence using numerical simulations of hydrodynamic turbulence without a mean velocity. The velocity correlation function, C(k, {\\tau} ) decays with time due to the eddy viscosity. In addition, C(k, {\\tau} ) shows oscillations due to the sweeping effect by \"random mean velocity field\" U_0. We also perform numerical simulation with a mean velocity U_0 = 10 for which C(k, {\\tau} ) exhibits damped oscillations with the frequency of |U_0|k and decay time scale corresponding to the U_0 = 0 case. For U_0 = 10z, the phase of C(k, {\\tau} ) show the sweeping eff"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.03679","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":""},"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"}