FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2089368482> ?p ?o ?g. }

• W2089368482 endingPage "750" @default.
• W2089368482 startingPage "736" @default.
• W2089368482 abstract "The present study begins with the solution of the linearized partial differential equations for viscous, secondary instabilities of nonlinearly developed primary Görtler rolls. A global energy balance verifies the amplification rates obtained from secondary instability analysis and confirms that the sinuous mode would dominate. This therefore explains the strong resemblance between the rms-streamwise u-velocity structure obtained by hot-wire measurements [Swearingen and Blackwelder, J. Fluid Mech. 182, 255 (1987)] in the cross-sectional yz plane and that of the sinuous mode. The u contours of the secondary disturbance have peaks at locations corresponding to the shoulder regions of the mushroom-like primary streamwise U-velocity structure and even more intense regions surrounding the mushroom stem near the wall. This structure is explained by detailed analysis of the energy-balancing mechanisms for u2/2 in yz plane: the Reynolds stress-conversion mechanism predominantly affects the primary spanwise rate of shear strain ∂U/∂z, whereas of less importance is the effect on the normal rate of shear strain ∂U/∂y; these are delicately balanced by the isotropizing mechanism of pressure rate of strain correlation and viscous dissipation. The appropriate pressure rates of strain correlation then provide the sources for the vertical v2/2 and spanwise w2/2 contributions to the kinetic energy. The sinuous mode can be identified with streamwise-propagating structures having spanwise waviness in flow visualization studies. The spanwise-antisymmetric w, which has intense regions in the upper and lower levels of the boundary layer, tends to wag the primary mushroom structure both at the upper domed region and in the stem region near the wall, not necessarily in phase, in the spanwise direction in the y,z plane, as shown in the flow-visualization work of Peerhossaini and Wesfreid [Intl. J. Heat Fluid Flow 9, 12 (1988)]. On the other hand, the infrequency of the varicose mode can be attributed to its relatively lower amplification rate for its most amplified mode. When observed, it is identifiable with the spanwise-symmetric streamwise propagating, repetitive ‘‘horseshoe’’ structures appearing in flow visualization. Energy balance analysis reveals that this mode is attributable mainly to the Reynolds stress-conversion mechanism associated with rate of strain ∂U/∂y in the high shear layer in the peak region, although the mechanism associated with ∂U/∂z is not dramatically smaller. Viscous dissipation, though not large enough to overcome the production mechanisms, is nevertheless prominent in the global balance as well as in the detailed structural balances in the yz plane. The secondary instability vorticity structure indicates that the sinuous mode is dominated by its vertical component ηs and the varicose mode by its spanwise component ζv." @default.
• W2089368482 created "2016-06-24" @default.
• W2089368482 creator A5055511467 @default.
• W2089368482 creator A5055699950 @default.
• W2089368482 date "1994-02-01" @default.
• W2089368482 modified "2023-10-18" @default.
• W2089368482 title "On the mechanism of sinuous and varicose modes in three‐dimensional viscous secondary instability of nonlinear Görtler rolls" @default.
• W2089368482 cites W1620185180 @default.
• W2089368482 cites W1672866803 @default.
• W2089368482 cites W1964659048 @default.
• W2089368482 cites W1967044943 @default.
• W2089368482 cites W1967794741 @default.
• W2089368482 cites W1974102572 @default.
• W2089368482 cites W1987238521 @default.
• W2089368482 cites W2003011915 @default.
• W2089368482 cites W2021053996 @default.
• W2089368482 cites W2021605266 @default.
• W2089368482 cites W2026999752 @default.
• W2089368482 cites W2043364994 @default.
• W2089368482 cites W2052987865 @default.
• W2089368482 cites W2055591973 @default.
• W2089368482 cites W2084718409 @default.
• W2089368482 cites W2090846249 @default.
• W2089368482 cites W2108730903 @default.
• W2089368482 cites W2133342843 @default.
• W2089368482 cites W2171096359 @default.
• W2089368482 cites W4247819468 @default.
• W2089368482 doi "https://doi.org/10.1063/1.868312" @default.
• W2089368482 hasPublicationYear "1994" @default.
• W2089368482 type Work @default.
• W2089368482 sameAs 2089368482 @default.
• W2089368482 citedByCount "63" @default.
• W2089368482 countsByYear W20893684822013 @default.
• W2089368482 countsByYear W20893684822014 @default.
• W2089368482 countsByYear W20893684822015 @default.
• W2089368482 countsByYear W20893684822016 @default.
• W2089368482 countsByYear W20893684822017 @default.
• W2089368482 countsByYear W20893684822019 @default.
• W2089368482 countsByYear W20893684822020 @default.
• W2089368482 countsByYear W20893684822021 @default.
• W2089368482 countsByYear W20893684822022 @default.
• W2089368482 countsByYear W20893684822023 @default.
• W2089368482 crossrefType "journal-article" @default.
• W2089368482 hasAuthorship W2089368482A5055511467 @default.
• W2089368482 hasAuthorship W2089368482A5055699950 @default.
• W2089368482 hasConcept C121332964 @default.
• W2089368482 hasConcept C135768490 @default.
• W2089368482 hasConcept C149342994 @default.
• W2089368482 hasConcept C159985019 @default.
• W2089368482 hasConcept C182748727 @default.
• W2089368482 hasConcept C192562407 @default.
• W2089368482 hasConcept C196558001 @default.
• W2089368482 hasConcept C207821765 @default.
• W2089368482 hasConcept C2777701225 @default.
• W2089368482 hasConcept C57879066 @default.
• W2089368482 hasConcept C74650414 @default.
• W2089368482 hasConcept C97355855 @default.
• W2089368482 hasConceptScore W2089368482C121332964 @default.
• W2089368482 hasConceptScore W2089368482C135768490 @default.
• W2089368482 hasConceptScore W2089368482C149342994 @default.
• W2089368482 hasConceptScore W2089368482C159985019 @default.
• W2089368482 hasConceptScore W2089368482C182748727 @default.
• W2089368482 hasConceptScore W2089368482C192562407 @default.
• W2089368482 hasConceptScore W2089368482C196558001 @default.
• W2089368482 hasConceptScore W2089368482C207821765 @default.
• W2089368482 hasConceptScore W2089368482C2777701225 @default.
• W2089368482 hasConceptScore W2089368482C57879066 @default.
• W2089368482 hasConceptScore W2089368482C74650414 @default.
• W2089368482 hasConceptScore W2089368482C97355855 @default.
• W2089368482 hasIssue "2" @default.
• W2089368482 hasLocation W20893684821 @default.
• W2089368482 hasOpenAccess W2089368482 @default.
• W2089368482 hasPrimaryLocation W20893684821 @default.
• W2089368482 hasRelatedWork W1535957159 @default.
• W2089368482 hasRelatedWork W1983360164 @default.
• W2089368482 hasRelatedWork W2024462339 @default.
• W2089368482 hasRelatedWork W2026926444 @default.
• W2089368482 hasRelatedWork W2030987421 @default.
• W2089368482 hasRelatedWork W2034329664 @default.
• W2089368482 hasRelatedWork W2125877407 @default.
• W2089368482 hasRelatedWork W2538176924 @default.
• W2089368482 hasRelatedWork W2884980270 @default.
• W2089368482 hasRelatedWork W618352955 @default.
• W2089368482 hasVolume "6" @default.
• W2089368482 isParatext "false" @default.
• W2089368482 isRetracted "false" @default.
• W2089368482 magId "2089368482" @default.
• W2089368482 workType "article" @default.