Matches in SemOpenAlex for { <https://semopenalex.org/work/W4280490841> ?p ?o ?g. }
Showing items 1 to 58 of
58
with 100 items per page.
- W4280490841 abstract "In wall-bounded shear flow the primary coherent structure is the streamwise roll and streak (R-S). Absent of an associated instability the R-S has been ascribed to non-normality mediated interaction between the mean flow and perturbations. This interaction may occur either directly due to excitation of a transiently growing perturbation or indirectly due to destabilization of the R-S by turbulent Reynolds stresses. A fundamental distinction between the direct and the indirect mechanisms, which is central to understanding the physics of turbulence, is that in the direct mechanism the R-S is itself the growing structure while in the indirect mechanism the R-S emerges as a self-organized structure. In the emergent R-S theory the fundamental mechanism is organization by the streak of Reynolds stresses configured to support its associated roll by the lift-up process. This requires that a streak organizes turbulent perturbations such as to produce Reynolds stresses configured to reinforce the streak. In this paper we provide detailed analysis explaining physically why this positive feedback occurs and is a universal property of turbulence in shear flow. DNS data from the same turbulent flow as that used in the theoretical study (Poisseullle flow at R=1650) is also analyzed verifying that this mechanism operates in DNS." @default.
- W4280490841 created "2022-05-22" @default.
- W4280490841 creator A5015611382 @default.
- W4280490841 creator A5083248974 @default.
- W4280490841 creator A5089610820 @default.
- W4280490841 date "2022-05-16" @default.
- W4280490841 modified "2023-09-26" @default.
- W4280490841 title "Mechanism of Roll-Streak Structure Formation and Maintenance in Turbulent Shear Flow" @default.
- W4280490841 doi "https://doi.org/10.48550/arxiv.2205.07469" @default.
- W4280490841 hasPublicationYear "2022" @default.
- W4280490841 type Work @default.
- W4280490841 citedByCount "0" @default.
- W4280490841 crossrefType "posted-content" @default.
- W4280490841 hasAuthorship W4280490841A5015611382 @default.
- W4280490841 hasAuthorship W4280490841A5083248974 @default.
- W4280490841 hasAuthorship W4280490841A5089610820 @default.
- W4280490841 hasBestOaLocation W42804908411 @default.
- W4280490841 hasConcept C120665830 @default.
- W4280490841 hasConcept C121332964 @default.
- W4280490841 hasConcept C124101348 @default.
- W4280490841 hasConcept C135768490 @default.
- W4280490841 hasConcept C139002025 @default.
- W4280490841 hasConcept C182748727 @default.
- W4280490841 hasConcept C196558001 @default.
- W4280490841 hasConcept C207821765 @default.
- W4280490841 hasConcept C41008148 @default.
- W4280490841 hasConcept C57879066 @default.
- W4280490841 hasConcept C65185188 @default.
- W4280490841 hasConcept C74650414 @default.
- W4280490841 hasConceptScore W4280490841C120665830 @default.
- W4280490841 hasConceptScore W4280490841C121332964 @default.
- W4280490841 hasConceptScore W4280490841C124101348 @default.
- W4280490841 hasConceptScore W4280490841C135768490 @default.
- W4280490841 hasConceptScore W4280490841C139002025 @default.
- W4280490841 hasConceptScore W4280490841C182748727 @default.
- W4280490841 hasConceptScore W4280490841C196558001 @default.
- W4280490841 hasConceptScore W4280490841C207821765 @default.
- W4280490841 hasConceptScore W4280490841C41008148 @default.
- W4280490841 hasConceptScore W4280490841C57879066 @default.
- W4280490841 hasConceptScore W4280490841C65185188 @default.
- W4280490841 hasConceptScore W4280490841C74650414 @default.
- W4280490841 hasLocation W42804908411 @default.
- W4280490841 hasLocation W42804908412 @default.
- W4280490841 hasOpenAccess W4280490841 @default.
- W4280490841 hasPrimaryLocation W42804908411 @default.
- W4280490841 hasRelatedWork W1992567861 @default.
- W4280490841 hasRelatedWork W2004725806 @default.
- W4280490841 hasRelatedWork W2036392167 @default.
- W4280490841 hasRelatedWork W2041328019 @default.
- W4280490841 hasRelatedWork W2066181500 @default.
- W4280490841 hasRelatedWork W2333780483 @default.
- W4280490841 hasRelatedWork W3019986638 @default.
- W4280490841 hasRelatedWork W3021553322 @default.
- W4280490841 hasRelatedWork W4293583932 @default.
- W4280490841 hasRelatedWork W2170184569 @default.
- W4280490841 isParatext "false" @default.
- W4280490841 isRetracted "false" @default.
- W4280490841 workType "article" @default.