FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3120197941> ?p ?o ?g. }

• W3120197941 abstract "Flow through the turbine section of gas turbine engines is inherently unsteady due to a variety of factors, such as the relative motion of rotors and stators. In low pressure turbines, periodic wake passing has been shown to impact boundary layer separation, blade surface pressure distribution, and loss generation. The effect of periodic disturbances on the endwall flow is less understood. The present paper considers the response of an endwall vortical structure, the passage vortex, to various upstream disturbances. The passage vortex is a three-dimensional unsteady flow feature which generates aerodynamic losses as it interacts with the flow along the blade suction surface. High-speed velocimetry and numerical simulations have shown that the vortex intermittently loses coherence and varies in strength and position over time. The intermittent loss of coherence of the passage vortex is believed to be related to the leading-edge junction flow dynamics. An array of pneumatic devices was installed upstream of a linear cascade of low-pressure turbine blades to produce periodic disturbances that impact the blade leading edge region. The change in the unsteady characteristics of the vortex were analyzed under the influence of various upstream disturbances. This study expands upon previous experiments to include disturbances of two different magnitudes and over a larger frequency range. A small disturbance and a large disturbance were created and characterized by their maximum velocity deficit and nondimensionalized by the on-time of the solenoid valve. The characteristics of the disturbances, in terms of frequency, and velocity deficit are modified by changing the device’s settings. A plane of PIV data was collected between the upstream device and the blade leading edge to characterize the periodic disturbances. A plane of high-speed SPIV data was collected inside the blade passage to examine how the disturbances impacted the vortex. The size and frequency of the disturbances had a nonlinear impact on the vortex size and strength. Fourier analysis revealed that the actuation frequency caused a harmonic response, and a change in the temporal behavior of the PV. The VITA method was implemented in this study to provide insight into the disturbance’s impact on the PV. Each actuation frequency caused a different response from the vortex, but the vortex dynamics did not lock-on to the disturbance frequency." @default.
• W3120197941 created "2021-01-18" @default.
• W3120197941 creator A5003916352 @default.
• W3120197941 creator A5051105157 @default.
• W3120197941 creator A5062939142 @default.
• W3120197941 date "2021-01-04" @default.
• W3120197941 modified "2023-10-01" @default.
• W3120197941 title "Evaluating the Passage Vortex Response to Upstream Periodic Unsteadiness" @default.
• W3120197941 cites W1670887516 @default.
• W3120197941 cites W1964458029 @default.
• W3120197941 cites W1981964798 @default.
• W3120197941 cites W1983076027 @default.
• W3120197941 cites W1985444098 @default.
• W3120197941 cites W1994161104 @default.
• W3120197941 cites W1995935529 @default.
• W3120197941 cites W2007372460 @default.
• W3120197941 cites W2026172262 @default.
• W3120197941 cites W2027018969 @default.
• W3120197941 cites W2085103916 @default.
• W3120197941 cites W2095178671 @default.
• W3120197941 cites W2098535567 @default.
• W3120197941 cites W2115719646 @default.
• W3120197941 cites W2131954084 @default.
• W3120197941 cites W2332810137 @default.
• W3120197941 cites W2727551840 @default.
• W3120197941 cites W2911152001 @default.
• W3120197941 cites W2998264503 @default.
• W3120197941 cites W4230114855 @default.
• W3120197941 cites W2076138266 @default.
• W3120197941 doi "https://doi.org/10.2514/6.2021-1090" @default.
• W3120197941 hasPublicationYear "2021" @default.
• W3120197941 type Work @default.
• W3120197941 sameAs 3120197941 @default.
• W3120197941 citedByCount "0" @default.
• W3120197941 crossrefType "proceedings-article" @default.
• W3120197941 hasAuthorship W3120197941A5003916352 @default.
• W3120197941 hasAuthorship W3120197941A5051105157 @default.
• W3120197941 hasAuthorship W3120197941A5062939142 @default.
• W3120197941 hasConcept C111603439 @default.
• W3120197941 hasConcept C121332964 @default.
• W3120197941 hasConcept C127313418 @default.
• W3120197941 hasConcept C127413603 @default.
• W3120197941 hasConcept C13393347 @default.
• W3120197941 hasConcept C140820882 @default.
• W3120197941 hasConcept C146978453 @default.
• W3120197941 hasConcept C178760647 @default.
• W3120197941 hasConcept C182748727 @default.
• W3120197941 hasConcept C196558001 @default.
• W3120197941 hasConcept C20381859 @default.
• W3120197941 hasConcept C2778449969 @default.
• W3120197941 hasConcept C2779570065 @default.
• W3120197941 hasConcept C48939323 @default.
• W3120197941 hasConcept C57879066 @default.
• W3120197941 hasConceptScore W3120197941C111603439 @default.
• W3120197941 hasConceptScore W3120197941C121332964 @default.
• W3120197941 hasConceptScore W3120197941C127313418 @default.
• W3120197941 hasConceptScore W3120197941C127413603 @default.
• W3120197941 hasConceptScore W3120197941C13393347 @default.
• W3120197941 hasConceptScore W3120197941C140820882 @default.
• W3120197941 hasConceptScore W3120197941C146978453 @default.
• W3120197941 hasConceptScore W3120197941C178760647 @default.
• W3120197941 hasConceptScore W3120197941C182748727 @default.
• W3120197941 hasConceptScore W3120197941C196558001 @default.
• W3120197941 hasConceptScore W3120197941C20381859 @default.
• W3120197941 hasConceptScore W3120197941C2778449969 @default.
• W3120197941 hasConceptScore W3120197941C2779570065 @default.
• W3120197941 hasConceptScore W3120197941C48939323 @default.
• W3120197941 hasConceptScore W3120197941C57879066 @default.
• W3120197941 hasLocation W31201979411 @default.
• W3120197941 hasOpenAccess W3120197941 @default.
• W3120197941 hasPrimaryLocation W31201979411 @default.
• W3120197941 hasRelatedWork W1987253153 @default.
• W3120197941 hasRelatedWork W2009795912 @default.
• W3120197941 hasRelatedWork W2021450488 @default.
• W3120197941 hasRelatedWork W2083661522 @default.
• W3120197941 hasRelatedWork W2085768541 @default.
• W3120197941 hasRelatedWork W2105046378 @default.
• W3120197941 hasRelatedWork W2358299691 @default.
• W3120197941 hasRelatedWork W3044694967 @default.
• W3120197941 hasRelatedWork W4246729785 @default.
• W3120197941 hasRelatedWork W866765177 @default.
• W3120197941 isParatext "false" @default.
• W3120197941 isRetracted "false" @default.
• W3120197941 magId "3120197941" @default.
• W3120197941 workType "article" @default.