Matches in SemOpenAlex for { <https://semopenalex.org/work/W2068379105> ?p ?o ?g. }
Showing items 1 to 72 of
72
with 100 items per page.
- W2068379105 abstract "Studies on the effects of stator reduced frequency in low pressure turbines have shown that periodic wake-induced unsteadiness can increase steady flow circulation by as much as 15% and reduce losses compared to a steady flow datum. A large separation bubble downstream of peak suction that formed under steady flow conditions was periodically suppressed by wake passing events, resulting in significantly reduced losses within the boundary layer. This research extends this concept to a controlled diffusion compressor stator blade with a circular arc leading edge. The blade was placed inside a large scale, two-dimensional, cascade with a rotating bar mechanism used to simulate an upstream rotor blade row. The blade profile has been shown to experience leading edge separations and subsequent transition on both the pressure and suction surfaces due to a velocity overspeed caused by discontinuities in surface curvature. Testing was carried out at reduced frequencies of 0.47, 0.94 and 1.88 at the design inlet flow angle 45.5° and Reynolds number based on chord of 230,000. The freestream turbulence intensity was 4.0%. A range of experimental measurements were used to look at the blade’s performance: high resolution time-averaged blade surface static pressure measurements, inlet and exit 3-hole probe traverses and instantaneous, ensemble averaged and time average surface mounted hot-film measurements for the calculation of turbulent intermittency and quasi wall-shear stress. Results showed that increasing the stator reduced frequency from, 0–1.88, increased the overall blade pressure loss. The losses generated by the pressure surface and suction surface differed significantly and are affected very differently. The pressure surface demonstrated a clear reduction in loss with an increase in reduced frequency whereas the opposite trend was seen on the suction surface. Wake-induced turbulent strips suppressed the formation of leading edge separation bubbles that formed under steady flow conditions and in between wake passing events. Wake-induced turbulent strips reduced in width and level of turbulent intermittency through the favorable pressure gradients leading to peak suction and grew in the adverse pressure gradient of the velocity overspeed. The flow between wake-induced turbulent strips partially relaminarised through the favorable pressure gradient leading to peak suction." @default.
- W2068379105 created "2016-06-24" @default.
- W2068379105 creator A5000974078 @default.
- W2068379105 creator A5065005489 @default.
- W2068379105 date "2012-12-01" @default.
- W2068379105 modified "2023-09-24" @default.
- W2068379105 title "The Effect of Reduced Frequency on Transition and Separation at the Leading Edge of a Compressor Stator" @default.
- W2068379105 doi "https://doi.org/10.1115/gtindia2012-9684" @default.
- W2068379105 hasPublicationYear "2012" @default.
- W2068379105 type Work @default.
- W2068379105 sameAs 2068379105 @default.
- W2068379105 citedByCount "0" @default.
- W2068379105 crossrefType "proceedings-article" @default.
- W2068379105 hasAuthorship W2068379105A5000974078 @default.
- W2068379105 hasAuthorship W2068379105A5065005489 @default.
- W2068379105 hasConcept C111603439 @default.
- W2068379105 hasConcept C121332964 @default.
- W2068379105 hasConcept C131097465 @default.
- W2068379105 hasConcept C158522163 @default.
- W2068379105 hasConcept C182748727 @default.
- W2068379105 hasConcept C192562407 @default.
- W2068379105 hasConcept C196558001 @default.
- W2068379105 hasConcept C2776529397 @default.
- W2068379105 hasConcept C2776911258 @default.
- W2068379105 hasConcept C2779570065 @default.
- W2068379105 hasConcept C48939323 @default.
- W2068379105 hasConcept C57879066 @default.
- W2068379105 hasConcept C62520636 @default.
- W2068379105 hasConcept C77576233 @default.
- W2068379105 hasConcept C97355855 @default.
- W2068379105 hasConceptScore W2068379105C111603439 @default.
- W2068379105 hasConceptScore W2068379105C121332964 @default.
- W2068379105 hasConceptScore W2068379105C131097465 @default.
- W2068379105 hasConceptScore W2068379105C158522163 @default.
- W2068379105 hasConceptScore W2068379105C182748727 @default.
- W2068379105 hasConceptScore W2068379105C192562407 @default.
- W2068379105 hasConceptScore W2068379105C196558001 @default.
- W2068379105 hasConceptScore W2068379105C2776529397 @default.
- W2068379105 hasConceptScore W2068379105C2776911258 @default.
- W2068379105 hasConceptScore W2068379105C2779570065 @default.
- W2068379105 hasConceptScore W2068379105C48939323 @default.
- W2068379105 hasConceptScore W2068379105C57879066 @default.
- W2068379105 hasConceptScore W2068379105C62520636 @default.
- W2068379105 hasConceptScore W2068379105C77576233 @default.
- W2068379105 hasConceptScore W2068379105C97355855 @default.
- W2068379105 hasLocation W20683791051 @default.
- W2068379105 hasOpenAccess W2068379105 @default.
- W2068379105 hasPrimaryLocation W20683791051 @default.
- W2068379105 hasRelatedWork W1972619961 @default.
- W2068379105 hasRelatedWork W1975043253 @default.
- W2068379105 hasRelatedWork W1988738699 @default.
- W2068379105 hasRelatedWork W1995969749 @default.
- W2068379105 hasRelatedWork W2007992945 @default.
- W2068379105 hasRelatedWork W2008677237 @default.
- W2068379105 hasRelatedWork W2027926840 @default.
- W2068379105 hasRelatedWork W2064304030 @default.
- W2068379105 hasRelatedWork W2069497720 @default.
- W2068379105 hasRelatedWork W2084284241 @default.
- W2068379105 hasRelatedWork W2095159174 @default.
- W2068379105 hasRelatedWork W2152077601 @default.
- W2068379105 hasRelatedWork W215369056 @default.
- W2068379105 hasRelatedWork W2176125529 @default.
- W2068379105 hasRelatedWork W2178920098 @default.
- W2068379105 hasRelatedWork W2389025463 @default.
- W2068379105 hasRelatedWork W2394168824 @default.
- W2068379105 hasRelatedWork W303922768 @default.
- W2068379105 hasRelatedWork W323514398 @default.
- W2068379105 hasRelatedWork W292641257 @default.
- W2068379105 isParatext "false" @default.
- W2068379105 isRetracted "false" @default.
- W2068379105 magId "2068379105" @default.
- W2068379105 workType "article" @default.