Matches in SemOpenAlex for { <https://semopenalex.org/work/W577291720> ?p ?o ?g. }
Showing items 1 to 85 of
85
with 100 items per page.
- W577291720 abstract "Linear stability and the nonmodal transient energy growth in compressible plane Couette flow are investigated for two prototype mean flows: (a) the uniform shear flow with constant viscosity, and (b) the nonuniform shear flow with stratified viscosity. Both mean flows are linearly unstable for a range of supersonic Mach numbers (M). For a given M, the critical Reynolds number (Re) is significantly smaller for the uniform shear flow than its nonuniform shear counterpart; for a given Re, the dominant instability (over all streamwise wave numbers, α) of each mean flow belongs to different modes for a range of supersonic M. An analysis of perturbation energy reveals that the instability is primarily caused by an excess transfer of energy from mean flow to perturbations. It is shown that the energy transfer from mean flow occurs close to the moving top wall for “mode I” instability, whereas it occurs in the bulk of the flow domain for “mode II.” For the nonmodal transient growth analysis, it is shown that the maximum temporal amplification of perturbation energy, Gmax, and the corresponding time scale are significantly larger for the uniform shear case compared to those for its nonuniform counterpart. For α=0, the linear stability operator can be partitioned into L∼L +Re2 Lp, and the Re-dependent operator Lp is shown to have a negligibly small contribution to perturbation energy which is responsible for the validity of the well-known quadratic-scaling law in uniform shear flow: G(t∕Re)∼Re2. In contrast, the dominance of Lp is responsible for the invalidity of this scaling law in nonuniform shear flow. An inviscid reduced model, based on Ellingsen-Palm-type solution, has been shown to capture all salient features of transient energy growth of full viscous problem. For both modal and nonmodal instability, it is shown that the viscosity stratification of the underlying mean flow would lead to a delayed transition in compressible Couette flow." @default.
- W577291720 created "2016-06-24" @default.
- W577291720 creator A5031603893 @default.
- W577291720 creator A5032389006 @default.
- W577291720 creator A5055311403 @default.
- W577291720 date "2008-01-01" @default.
- W577291720 modified "2023-10-18" @default.
- W577291720 title "Linear stability, transient growth and the role of viscosity stratification in compressible Couette flow" @default.
- W577291720 hasPublicationYear "2008" @default.
- W577291720 type Work @default.
- W577291720 sameAs 577291720 @default.
- W577291720 citedByCount "0" @default.
- W577291720 crossrefType "journal-article" @default.
- W577291720 hasAuthorship W577291720A5031603893 @default.
- W577291720 hasAuthorship W577291720A5032389006 @default.
- W577291720 hasAuthorship W577291720A5055311403 @default.
- W577291720 hasConcept C119567554 @default.
- W577291720 hasConcept C121332964 @default.
- W577291720 hasConcept C135768490 @default.
- W577291720 hasConcept C165231844 @default.
- W577291720 hasConcept C177918212 @default.
- W577291720 hasConcept C180925781 @default.
- W577291720 hasConcept C182748727 @default.
- W577291720 hasConcept C196558001 @default.
- W577291720 hasConcept C197482802 @default.
- W577291720 hasConcept C205904022 @default.
- W577291720 hasConcept C205991772 @default.
- W577291720 hasConcept C207821765 @default.
- W577291720 hasConcept C23898865 @default.
- W577291720 hasConcept C2779099160 @default.
- W577291720 hasConcept C38349280 @default.
- W577291720 hasConcept C5192115 @default.
- W577291720 hasConcept C57879066 @default.
- W577291720 hasConcept C62520636 @default.
- W577291720 hasConcept C74650414 @default.
- W577291720 hasConcept C76563973 @default.
- W577291720 hasConcept C84655787 @default.
- W577291720 hasConceptScore W577291720C119567554 @default.
- W577291720 hasConceptScore W577291720C121332964 @default.
- W577291720 hasConceptScore W577291720C135768490 @default.
- W577291720 hasConceptScore W577291720C165231844 @default.
- W577291720 hasConceptScore W577291720C177918212 @default.
- W577291720 hasConceptScore W577291720C180925781 @default.
- W577291720 hasConceptScore W577291720C182748727 @default.
- W577291720 hasConceptScore W577291720C196558001 @default.
- W577291720 hasConceptScore W577291720C197482802 @default.
- W577291720 hasConceptScore W577291720C205904022 @default.
- W577291720 hasConceptScore W577291720C205991772 @default.
- W577291720 hasConceptScore W577291720C207821765 @default.
- W577291720 hasConceptScore W577291720C23898865 @default.
- W577291720 hasConceptScore W577291720C2779099160 @default.
- W577291720 hasConceptScore W577291720C38349280 @default.
- W577291720 hasConceptScore W577291720C5192115 @default.
- W577291720 hasConceptScore W577291720C57879066 @default.
- W577291720 hasConceptScore W577291720C62520636 @default.
- W577291720 hasConceptScore W577291720C74650414 @default.
- W577291720 hasConceptScore W577291720C76563973 @default.
- W577291720 hasConceptScore W577291720C84655787 @default.
- W577291720 hasLocation W5772917201 @default.
- W577291720 hasOpenAccess W577291720 @default.
- W577291720 hasPrimaryLocation W5772917201 @default.
- W577291720 hasRelatedWork W1538041412 @default.
- W577291720 hasRelatedWork W1967198670 @default.
- W577291720 hasRelatedWork W1967934901 @default.
- W577291720 hasRelatedWork W1985024900 @default.
- W577291720 hasRelatedWork W1994036108 @default.
- W577291720 hasRelatedWork W2045712097 @default.
- W577291720 hasRelatedWork W2078610166 @default.
- W577291720 hasRelatedWork W2099726454 @default.
- W577291720 hasRelatedWork W2104375555 @default.
- W577291720 hasRelatedWork W2159787378 @default.
- W577291720 hasRelatedWork W2166305580 @default.
- W577291720 hasRelatedWork W2171070667 @default.
- W577291720 hasRelatedWork W2339829088 @default.
- W577291720 hasRelatedWork W2396209911 @default.
- W577291720 hasRelatedWork W2574941228 @default.
- W577291720 hasRelatedWork W2737755800 @default.
- W577291720 hasRelatedWork W2952868574 @default.
- W577291720 hasRelatedWork W2963679100 @default.
- W577291720 hasRelatedWork W3104211558 @default.
- W577291720 hasRelatedWork W2566333405 @default.
- W577291720 isParatext "false" @default.
- W577291720 isRetracted "false" @default.
- W577291720 magId "577291720" @default.
- W577291720 workType "article" @default.