Matches in SemOpenAlex for { <https://semopenalex.org/work/W2313902013> ?p ?o ?g. }
Showing items 1 to 75 of
75
with 100 items per page.
- W2313902013 abstract "Roughness elements in a laminar boundary layer can cause the flow to transition. The effects of discrete and distributed roughness are explored using direct numerical simulation on unstructured grids. Velocity profiles for Mach 8.12 flow past a cylindrical roughness element are compared to experiment. Flow features produced by an isolated hemispherical bump are studied for three Mach numbers [3.37, 5.26, 8.23] whose simulation parameters are chosen to match the experiments performed by Danehyet al. at NASA Langley. The vortices formed upstream of the roughness due to boundary layer separation wrap around the hemisphere generating coherent streamwise vortices. A significant increase in wall skin friction coefficient along with the presence of unsteady structures far downstream of the bump for the lower Mach number cases indicated the transitional/turbulent nature of the flow while M∞=8.23 remained laminar. These observations are consistent with those in experiment. The effect of a sinusoidally varying distributed roughness was also investigated at M∞=2.9. The flow transitioned to a fully developed turbulent boundary layer that shows good quantitative agreement with experimental data. The cumulative effect of multiple roughness elements is to decelerate the near wall fluid, and setup inflexional velocity profiles. For both types of roughness it was seen that: (1) coherent streamwise vortices were produced which broke down far downstream, (2) prominent hairpin shaped structures were observed as the flow transitioned and (3) wall normal and spanwise inflexion points in streamwise velocity are observed." @default.
- W2313902013 created "2016-06-24" @default.
- W2313902013 creator A5003571376 @default.
- W2313902013 creator A5038218139 @default.
- W2313902013 creator A5069898553 @default.
- W2313902013 date "2011-01-04" @default.
- W2313902013 modified "2023-10-16" @default.
- W2313902013 title "Roughness-Induced Transition in High Speed Flows" @default.
- W2313902013 cites W1923144262 @default.
- W2313902013 cites W2009751230 @default.
- W2313902013 cites W2040750992 @default.
- W2313902013 cites W2050613454 @default.
- W2313902013 cites W2057599150 @default.
- W2313902013 cites W2077961570 @default.
- W2313902013 cites W2082506167 @default.
- W2313902013 cites W2087910288 @default.
- W2313902013 cites W2100332121 @default.
- W2313902013 cites W2137864615 @default.
- W2313902013 cites W2151731505 @default.
- W2313902013 cites W2152178863 @default.
- W2313902013 cites W2164503505 @default.
- W2313902013 cites W2313212252 @default.
- W2313902013 cites W2322155720 @default.
- W2313902013 cites W2322708428 @default.
- W2313902013 cites W2324122974 @default.
- W2313902013 cites W4247819468 @default.
- W2313902013 cites W631163618 @default.
- W2313902013 doi "https://doi.org/10.2514/6.2011-566" @default.
- W2313902013 hasPublicationYear "2011" @default.
- W2313902013 type Work @default.
- W2313902013 sameAs 2313902013 @default.
- W2313902013 citedByCount "20" @default.
- W2313902013 countsByYear W23139020132012 @default.
- W2313902013 countsByYear W23139020132013 @default.
- W2313902013 countsByYear W23139020132014 @default.
- W2313902013 countsByYear W23139020132016 @default.
- W2313902013 countsByYear W23139020132017 @default.
- W2313902013 countsByYear W23139020132018 @default.
- W2313902013 countsByYear W23139020132019 @default.
- W2313902013 countsByYear W23139020132020 @default.
- W2313902013 countsByYear W23139020132021 @default.
- W2313902013 countsByYear W23139020132022 @default.
- W2313902013 crossrefType "proceedings-article" @default.
- W2313902013 hasAuthorship W2313902013A5003571376 @default.
- W2313902013 hasAuthorship W2313902013A5038218139 @default.
- W2313902013 hasAuthorship W2313902013A5069898553 @default.
- W2313902013 hasConcept C107365816 @default.
- W2313902013 hasConcept C127313418 @default.
- W2313902013 hasConcept C159985019 @default.
- W2313902013 hasConcept C192562407 @default.
- W2313902013 hasConcept C41008148 @default.
- W2313902013 hasConcept C71039073 @default.
- W2313902013 hasConceptScore W2313902013C107365816 @default.
- W2313902013 hasConceptScore W2313902013C127313418 @default.
- W2313902013 hasConceptScore W2313902013C159985019 @default.
- W2313902013 hasConceptScore W2313902013C192562407 @default.
- W2313902013 hasConceptScore W2313902013C41008148 @default.
- W2313902013 hasConceptScore W2313902013C71039073 @default.
- W2313902013 hasLocation W23139020131 @default.
- W2313902013 hasOpenAccess W2313902013 @default.
- W2313902013 hasPrimaryLocation W23139020131 @default.
- W2313902013 hasRelatedWork W1966522691 @default.
- W2313902013 hasRelatedWork W2032025132 @default.
- W2313902013 hasRelatedWork W2329952304 @default.
- W2313902013 hasRelatedWork W2349732462 @default.
- W2313902013 hasRelatedWork W2386922414 @default.
- W2313902013 hasRelatedWork W2610351625 @default.
- W2313902013 hasRelatedWork W3133982275 @default.
- W2313902013 hasRelatedWork W4297916609 @default.
- W2313902013 hasRelatedWork W4304014137 @default.
- W2313902013 hasRelatedWork W4313638943 @default.
- W2313902013 isParatext "false" @default.
- W2313902013 isRetracted "false" @default.
- W2313902013 magId "2313902013" @default.
- W2313902013 workType "article" @default.