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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
LI Yugang1, NI Yiping2 and CONG Peiwen1
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DOI:10.17265/2159-5879/2022.03.001
Affiliation(s)
1. Deepwater Engineering Research Center, Dalian University of Technology, Dalian 116024, China
2. Pearl River Hydraulic Research Institute, Pearl River Water Resource Commission, Guangzhou, 510611, China
ABSTRACT
In ocean engineering test basin, when the model test is carried out, the wave generated by the wavemaker generates reflected wave after being reflected from the basin wall and structural model, which propagates to the wave-making plates and reflects again to generate secondary reflected wave. The secondary reflected wave interferes with the wave field of the basin, thus reducing the accuracy of the test. The active absorption system is often used to eliminate the secondary reflection wave. The active absorbing theory is the theoretical basis for wave-maker to achieve the wave-making function. This paper investigates force-feedback active absorption theory for flap-type wavemaker. Based on the expansion of two-dimensional wave theory, the velocity potential solutions of three-dimensional irregular wave theory are obtained. According to the relationship between velocity potential solution and pressure, the analytical expression of wave torque acting on wave-making paddles is obtained. The first-order torque of regular and irregular wave derived from linear wave theory can be used as the theoretical basis for developing multidirectional absorption system.
KEYWORDS
Flap-type wavemaker, active absorption system, force-feedback, fluid force.
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