Influence of the aspect ratio of the sheet for an electric generator utilizing the rotation of a flapping sheet

Yamano, Akio; Ishiguro, Hiroshi; Shintani, Atsuhiko; Nakagawa, Chihiro; Ito, Tomohiro

doi:10.1299/mej.20-00459

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…Then, the effect of heat was introduced and applied to the dynamics calculations of plates containing aerodynamic heat. 111,112 Others, such as Yamano et al ., 113 introduced aerodynamics into thin elements to study the chattering and energy transformation of a large plate under fluid flow. Cui et al .…”

Section: Function Expansion and Applicationmentioning

confidence: 99%

“…Then, the effect of heat was introduced and applied to the dynamics calculations of plates containing aerodynamic heat. 111,112 Others, such as Yamano et al, 113 introduced aerodynamics into thin elements to study the chattering and energy transformation of a large plate under fluid flow. Cui et al 114 added a temperature term to the generalized coordinates of the thin plate element and applied it to study the thermodynamics of a large antenna on a satellite.…”

Section: Special Boundarymentioning

confidence: 99%

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Research status and prospect of plate elements in absolute nodal coordinate formulation

Zhang

Ren

Zhou

2022

Proceedings of the Institution of Mechanical Engineers, Part K:

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The Absolute Nodal Coordinate Formulation (ANCF) is a milestone in the study of flexible multibody dynamics and is of great significance for the study of the dynamics of multi-flexible systems, of which the plate element is an important part. In this article, the construction and principles of this type of element are systematically traced, the types of elements that have been studied are summarized, and the research history of the element locking problem and extended applications in different fields are briefly described. Through the systematic summary, the shortcomings in the current research and application of the element are identified, and some suggestions for future theoretical research on the plate element are given. The functional expansion of the plate element under the conditions of constraints, materials and physical fields as well as practical engineering applications are discussed.

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Section: Function Expansion and Applicationmentioning

confidence: 99%

Section: Special Boundarymentioning

confidence: 99%

Research status and prospect of plate elements in absolute nodal coordinate formulation

Zhang

Ren

Zhou

2022

Proceedings of the Institution of Mechanical Engineers, Part K:

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Flow-Induced Vibration and Energy-Harvesting Performance Analysis for Parallelized Two Flutter-Mills Considering Span-Wise Plate Deformation with Geometrical Nonlinearity and Three-Dimensional Flow

Yamano¹,

Chiba²

2022

Int. J. Str. Stab. Dyn.

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Recently, micro wind energy harvesting devices such as flutter-mills have received considerable attention. The advantage of a flutter-mill over conventional wind power generators is that it can be easily parallelized. They increase the output power, but exhibit highly complex characteristics because the power generation performance depends on the distance and phase lag of vibration among the flapping sheets. This study reports the modeling and numerical simulations of the flow-induced vibration for two parallelized sheets under uniform flow, by considering the geometrical nonlinearity of sheets and wake shedding from the trailing edge. We modeled the fluid–structure and energy harvesting circuit interaction between two flapping sheets using the unsteady vortex lattice method for fluid and finite element method for the sheets, considering three-dimensional flow and span-wise deformation, to understand the complex interaction between two flapping sheets. The proposed model was verified by evaluating its performance against the results of computational fluid dynamics analyses and existing literature. Additionally, we examined the relationships between the aspect ratio of the sheets, harvested power, and phase lag between two flapping sheets using our model. Moreover, we confirmed the span-wise deformation to appear at a large inlet flow under a large aspect ratio, whereas the phase lag was confirmed to converge during the anti-phase mode when the flapping mode shifted to a higher level. In addition, we modeled the effect of the electrical load in a power generator circuit as the equivalent damping parameter of the sheets. Subsequently, we evaluated the optimal damping parameter of the sheets, which is equivalent to the electrical load in a power generator circuit, to obtain the energy from the fluid, and simultaneously, the phase difference of the flapping sheets converged to the anti-phase. In particular, when the distance between the two sheets is the same as the sheet length, the power generation performance is better than that of the single sheet.

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Influence of the aspect ratio of the sheet for an electric generator utilizing the rotation of a flapping sheet

Cited by 2 publications

References 23 publications

Research status and prospect of plate elements in absolute nodal coordinate formulation

Research status and prospect of plate elements in absolute nodal coordinate formulation

Flow-Induced Vibration and Energy-Harvesting Performance Analysis for Parallelized Two Flutter-Mills Considering Span-Wise Plate Deformation with Geometrical Nonlinearity and Three-Dimensional Flow

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