Matches in SemOpenAlex for { <https://semopenalex.org/work/W2020628684> ?p ?o ?g. }
Showing items 1 to 71 of
71
with 100 items per page.
- W2020628684 abstract "Abstract : The noise of supersonic jet flows is due in part to the interaction between jet instability waves and the jet shock-cell structure. If no countermeasures are taken, the emitted shock-cell noise will re-excite certain instability wave modes at the nozzle lip and cause resonant feedback to occur. This feedback resonance, known as supersonic jet screech, causes the jet to flap violently at discrete frequencies and generate very strong, narrow banded tones. Jet screech has been shown to be a source of acoustic fatigue in the tail and nozzle structures of supersonic aircraft. It is important that methods for predicting the screech amplitude be developed. Screech sound generation is one such element. We isolate the interaction of an unsteady shear layer with a single oblique shock. To obtain an overall understanding of the phenomenon with fewest simplifications, we study this problem through the numerical solution of the Navier Stokes equations. We then consider idealizations which allow us to obtain a similar but wider range of results with specially linearized Euler equations. The findings of these r0sults motivate the use of geometric acoustics to describe the screech generation process. The Navier-Stokes and Euler simulations have revealed important details about the interaction process, how the acoustic field results, and why screech is so loud. The mechanism for sound production is found to be fundamentally different and more efficient when the instability waves are the large vortices typical of screech, than when they are small disturbances. Geometrical acoustics can be used to explain the leakage effect at high instability wave amplitude. We conclude that the mechanism for high amplitude screech generation is an unsteady modification to the velocity field by the instability waves that permits the incident shock to refract through the shear layer." @default.
- W2020628684 created "2016-06-24" @default.
- W2020628684 creator A5075962231 @default.
- W2020628684 creator A5077177539 @default.
- W2020628684 date "2000-06-12" @default.
- W2020628684 modified "2023-10-18" @default.
- W2020628684 title "A numerical investigation of sound generation in supersonic jet screech" @default.
- W2020628684 cites W1982444935 @default.
- W2020628684 cites W1985386278 @default.
- W2020628684 cites W2012977459 @default.
- W2020628684 cites W2073091514 @default.
- W2020628684 cites W2092651459 @default.
- W2020628684 cites W2103861920 @default.
- W2020628684 cites W2131621473 @default.
- W2020628684 cites W2143507904 @default.
- W2020628684 cites W2152499505 @default.
- W2020628684 cites W2155732795 @default.
- W2020628684 cites W2332710871 @default.
- W2020628684 cites W4237560881 @default.
- W2020628684 doi "https://doi.org/10.2514/6.2000-2081" @default.
- W2020628684 hasPublicationYear "2000" @default.
- W2020628684 type Work @default.
- W2020628684 sameAs 2020628684 @default.
- W2020628684 citedByCount "40" @default.
- W2020628684 countsByYear W20206286842012 @default.
- W2020628684 countsByYear W20206286842013 @default.
- W2020628684 countsByYear W20206286842014 @default.
- W2020628684 countsByYear W20206286842016 @default.
- W2020628684 countsByYear W20206286842017 @default.
- W2020628684 countsByYear W20206286842018 @default.
- W2020628684 countsByYear W20206286842019 @default.
- W2020628684 countsByYear W20206286842020 @default.
- W2020628684 countsByYear W20206286842021 @default.
- W2020628684 countsByYear W20206286842022 @default.
- W2020628684 countsByYear W20206286842023 @default.
- W2020628684 crossrefType "proceedings-article" @default.
- W2020628684 hasAuthorship W2020628684A5075962231 @default.
- W2020628684 hasAuthorship W2020628684A5077177539 @default.
- W2020628684 hasConcept C119947313 @default.
- W2020628684 hasConcept C121332964 @default.
- W2020628684 hasConcept C127413603 @default.
- W2020628684 hasConcept C13393347 @default.
- W2020628684 hasConcept C146978453 @default.
- W2020628684 hasConcept C203718221 @default.
- W2020628684 hasConcept C205991772 @default.
- W2020628684 hasConcept C24890656 @default.
- W2020628684 hasConceptScore W2020628684C119947313 @default.
- W2020628684 hasConceptScore W2020628684C121332964 @default.
- W2020628684 hasConceptScore W2020628684C127413603 @default.
- W2020628684 hasConceptScore W2020628684C13393347 @default.
- W2020628684 hasConceptScore W2020628684C146978453 @default.
- W2020628684 hasConceptScore W2020628684C203718221 @default.
- W2020628684 hasConceptScore W2020628684C205991772 @default.
- W2020628684 hasConceptScore W2020628684C24890656 @default.
- W2020628684 hasLocation W20206286841 @default.
- W2020628684 hasOpenAccess W2020628684 @default.
- W2020628684 hasPrimaryLocation W20206286841 @default.
- W2020628684 hasRelatedWork W1970618554 @default.
- W2020628684 hasRelatedWork W1975551549 @default.
- W2020628684 hasRelatedWork W2017992717 @default.
- W2020628684 hasRelatedWork W2035782601 @default.
- W2020628684 hasRelatedWork W2038046458 @default.
- W2020628684 hasRelatedWork W2160229270 @default.
- W2020628684 hasRelatedWork W2385325127 @default.
- W2020628684 hasRelatedWork W4238704460 @default.
- W2020628684 hasRelatedWork W4365514396 @default.
- W2020628684 hasRelatedWork W606788617 @default.
- W2020628684 isParatext "false" @default.
- W2020628684 isRetracted "false" @default.
- W2020628684 magId "2020628684" @default.
- W2020628684 workType "article" @default.