Journal of Engineering Mathematics

, Volume 111, Issue 1, pp 165–189 | Cite as

Performance analysis of a water tank with oscillating walls for wave energy harvesting

  • Po-Hsun Chen
  • Tian-Shiang Yang


In this work we analyze the performance of a novel conceptual design for water-wave energy converters. The model system in question consists of a water tank with two hinged side walls that oscillate when the water surface within the tank is subjected to a temporally periodic, spatially distributed pressure variation. Then, through transmissions, the two oscillating walls are connected to electric generators. A linearized two-dimensional potential flow problem is formulated for this model system, and the steady periodic system response is solved for analytically. A comprehensive parameter study then is carried out so as to clarify how the system’s performance is affected by its design and operation parameters. It is found that, in addition to a series of resonant forcing frequencies that produce large electric power output, there also exist certain anti-resonant forcing frequencies that generate zero power. Moreover, with optimally tuned parameters, the maximized electric power output of the model system studied in this work is comparable with, and even higher than, that of preexisting systems of similar nominal size.


Anti-resonance Linear water waves Performance analysis Power take-off unit Resonance Wave energy converter 



The authors gratefully acknowledge the Taiwan Ministry of Science and Technology for supporting this work through Grant MOST103-2221-E-006-096-MY3. They would also like to thank Professors Kuo-Shen Chen, Ching-Jenq Ho, Tz-Cheng Chiu and Chang-Da Wen of NCKU for a number of fruitful discussions on this work and other related topics.


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© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringNational Cheng Kung UniversityTainanTaiwan

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