Pitch Oscillation Control of Hydroplane in Dual System of Lab-scale Flapping Type Tidal Energy Harvester

Tambunan, Indra Hartarto; Sitorus, Patar Ebenezer; Putra, Hendra Adi; Ko, Jin Hwan; Park, Hoon Cheol; Kang, Tae Sam

doi:10.21535/jias.v1i3.175

Cited by 1 publication

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“…Each flapper is connected to a unidirectional gearbox that converts the oscillating motion of the flapping arm into unidirectional rotating motion. The motion converter was developed and tested in previous work on a single-flapper configuration [18]. The unidirectional rotating motion of the output shaft from each flapper is then combined into the single unidirectional rotating motion of the main output shaft.…”

Section: Kinematics and Dual Configuration Of A Flappermentioning

confidence: 99%

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Experimental and numerical study of a dual configuration for a flapping tidal current generator

Kim

et al. 2015

Bioinspir. Biomim.

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In this study, we conduct experimental and consecutive numerical analyses of a flapping tidal current generator with a mirror-type dual configuration with front-swing and rear-swing flappers. An experimental analysis of a small-scale prototype is conducted in a towing tank, and a numerical analysis is conducted by means of two-dimensional computational fluid dynamics simulations with an in-house code. An experimental study with a controller to determine the target arm angle shows that the resultant arm angle is dependent on the input arm angle, the frequency, and the applied load, while a high pitch is obtained simply with a high input arm angle. Through a parametric analysis conducted while varying these factors, a high applied load and a high input arm angle were found to be advantageous. Moreover, the optimal reduced frequency was found to be 0.125 in terms of the power extraction. In consecutive numerical investigations with the kinematics selected from the experiments, it was found that a rear-swing flapper contributes to the total amount of power more than a front-swing flapper with a distance of two times the chord length and with a 90° phase difference between the two. The high contribution stems from the high power generated by the rear-swing flapper, which mimics the tail fin movement of a dolphin along a flow, compared to a plunge system or a front-swing system, which mimics the tail fin movement of a dolphin against a flow. It is also due to the fact that the shed vorticities of the front-swing flapper slightly affect negatively or even positively the power performance of the rear-swing system at a given distance and phase angle.

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Section: Kinematics and Dual Configuration Of A Flappermentioning

confidence: 99%

“…In order to read the position angle of the arm, a rotary encoder is installed at one end of each flapping arm. Details pertaining to the algorithm and the hardware related to the control system are reported in Tambunan's work [18].…”

Section: Experimental Apparatusmentioning

confidence: 99%

Experimental and numerical study of a dual configuration for a flapping tidal current generator

Kim

et al. 2015

Bioinspir. Biomim.

View full text Add to dashboard Cite

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Pitch Oscillation Control of Hydroplane in Dual System of Lab-scale Flapping Type Tidal Energy Harvester

Cited by 1 publication

References 0 publications

Experimental and numerical study of a dual configuration for a flapping tidal current generator

Experimental and numerical study of a dual configuration for a flapping tidal current generator

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