Power Output of Spring-Mounted Lifting Plates in Axial Flow
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In this paper, two different spring-mounting systems of lifting flexible plates in ideal flow are compared for their suitability in energy harvesting of induced flutter instability via the reciprocating motion of the spring system. In previous work, it was found that compared to a fixed cantilever the introduction of the dynamic support in both systems yields lower flutter-onset flow speeds which is desirable for energy harvesting applications. The first system is a cantilevered thin flexible plate aligned with a uniform flow with the upstream end of the plate attached to a spring-mass system. We compare this system to one where the upstream end is hinged with a rotational spring at the mount. We map out the linear stability and power output characteristics of both systems with the introduction of dashpot damping at the mount. As expected the introduction of damping stabilises both systems and the order of magnitude of this stabilisation varies non-linearly for different levels of damping; this results in optimal points for energy harvesting for each system.
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Energy Production Characteristics of a Spring-Mounted Cantilevered-Free Flexible Plate in a Uniform FlowHowell, Richard; Lucey, Anthony (2012)We study a new fundamental system that comprises a cantilevered thin flexible plate exactly aligned with the direction of a uniform flow in which the upstream end of the flexible plate is not fixed. Instead, it is attached ...
19th Australasian fluid mechanics conference: Flow-induced structural instabilities via spring-mounted lifting flexible plates in a uniform flow for energy harvestingHowell, R.; Lucey, Anthony (2014)In this paper, two mounting systems are studied and compared. The first is a new system in fluid-structure interaction (FSI) wherein a cantilevered thin flexible plate is aligned with a uniform flow with the upstream end ...
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