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- W4304730656 abstract "The dynamics of a thin low-density polyethylene sheet subject to periodic forcing due to B'enard-K`arm`an vortices in a long narrow water channel is investigated here. In particular, the time-averaged sheet deflection and its oscillation amplitude are considered. The former is first illustrated to be well-approximated by the static equilibrium between the buoyancy force, the elastic restoring force, and the profile drag based on the depth-averaged water speed. Our observations also indicate that the presence of upstream vortices hinder the overall reconfiguration effect, well-known in an otherwise steady flow. For the sheet tip oscillations, a simple model based on torsional-spring-mounted flat plate correctly captures the measured tip amplitude over a wide range of sheet physical properties and flow conditions. Furthermore, a rich phenomenology of structural dynamics including vortex-forced-vibration, lock-in with the sheet natural frequency, flow-induced vibration due to the sheet wake, multiple-frequency and modal response is reported." @default.
- W4304730656 created "2022-10-12" @default.
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- W4304730656 date "2022-10-09" @default.
- W4304730656 modified "2023-10-16" @default.
- W4304730656 title "Reconfiguration and oscillations of a vertical, cantilevered-sheet subject to vortex-shedding" @default.
- W4304730656 doi "https://doi.org/10.1103/physrevfluids.8.093801" @default.
- W4304730656 hasPublicationYear "2022" @default.
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