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- W2010521833 abstract "Results from scale-model experiments and industrial gas turbine tests show that strut vortex shedding in an annular exhaust diffuser can effectively be modified by adding tapered chord to the struts. The struts are bluff bodies at full-speed, no-load conditions, when inlet swirl is close to 60 deg. Data from wind tunnel tests show that wake Strouhal number is 0.47, larger than that expected for an isolated cylinder wake. This value of Strouhal number agrees with those measured in full-scale exhaust diffusers. Wind tunnel tests showed that a strut with tapered chord most effectively reduced wake amplitudes and shifted shedding frequency. The tapered strut was also effective in reducing shedding amplitude in a scale-model diffuser. Finally, gas turbine tests employing a tapered strut showed significant reductions in unsteady pressure and noise. A major benefit of strut taper is a reduction of noise by uncoupling of vortex shedding from acoustic resonant response." @default.
- W2010521833 created "2016-06-24" @default.
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- W2010521833 date "1998-01-01" @default.
- W2010521833 modified "2023-09-26" @default.
- W2010521833 title "Vortex Shedding From Struts in an Annular Exhaust Diffuser" @default.
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- W2010521833 doi "https://doi.org/10.1115/1.2841380" @default.
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