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- W2093297730 abstract "The flow around a stationary circular cylinder modified by two synthetic jets positioned at the mean separation points is numerically studied. The Reynolds number based on the free-stream velocity and the circular cylinder diameter is Re=500. The focus is to present a novel way to suppress the lift fluctuations by changing the vortex shedding mode, and thus particular attention is paid to the interactions between the synthetic jets and wake shear layers and the resulting vortex dynamics. The overall influences of both momentum coefficient and excitation frequency are discussed. In some simulated cases, the vortex lock-on phenomenon is discovered, which causes the typical Kàrmàn type vortex shedding to be converted into the symmetric shedding modes, leading to the complete suppression of lift fluctuations. In other cases, the asymmetric shedding mode still dominates the wake evolution. Detailed vortical evolution for each typical wake pattern is analyzed to reveal the control mechanism. Additionally, the control effectiveness is evaluated, indicating that the present control strategy contributes an effective way to suppress the lift fluctuations and reduce the mean drag." @default.
- W2093297730 created "2016-06-24" @default.
- W2093297730 creator A5006081005 @default.
- W2093297730 creator A5067240869 @default.
- W2093297730 date "2015-04-01" @default.
- W2093297730 modified "2023-10-16" @default.
- W2093297730 title "Suppression of lift fluctuations on a circular cylinder by inducing the symmetric vortex shedding mode" @default.
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- W2093297730 doi "https://doi.org/10.1016/j.jfluidstructs.2015.01.011" @default.
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