Study on the hydrodynamic performance of an floating OWC-breakwater under the combined wave-current action

Wang Rongquan; Rui Kailong; Ning Dezhi; Liang Dongfang

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Wang Rongquan，Rui Kailong，Ning Dezhi, et al. Study on the hydrodynamic performance of an floating OWC-breakwater under the combined wave-current action[J]. Haiyang Xuebao，2026, 47(x)：1–12

Citation:

Wang Rongquan，Rui Kailong，Ning Dezhi, et al. Study on the hydrodynamic performance of an floating OWC-breakwater under the combined wave-current action[J]. Haiyang Xuebao，2026, 47(x)：1–12

Citation:

Wang Rongquan，Rui Kailong，Ning Dezhi, et al. Study on the hydrodynamic performance of an floating OWC-breakwater under the combined wave-current action[J]. Haiyang Xuebao，2026, 47(x)：1–12

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Study on the hydrodynamic performance of an floating OWC-breakwater under the combined wave-current action

1.
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, 116024
2.
Department of Engineering, University of Cambridge, Cambridge, UK

Received Date: 2026-01-27
Rev Recd Date: 2026-04-21

Available Online: 2026-04-29

Abstract

Abstract

The hydrodynamic performance of a floating oscillating water column (OWC) breakwater under the co-action of waves and currents is numerically investigated. A time domain two-dimensional (2D) fully nonlinear numerical model was established for the OWC-breakwater, and its reliability was validated using experimental data. The effects of the current speed, the rear wall draft, and the rear wall thickness on the transmission coefficient, the reflection coefficient, and the hydrodynamic efficiency are numerically analyzed. The results indicate that under following current conditions, the transmission coefficient, reflection coefficient, and hydrodynamic efficiency of the device all exhibit a decreasing trend; whereas under opposing current conditions, the opposite trends are observed. Furthermore, increasing the rear wall draft reduces the transmission coefficient and improves the hydrodynamic efficiency, with a limited effect on the reflection coefficient. Besides, increasing the rear wall thickness also decreases the transmission coefficient and enhances hydrodynamic efficiency, while its influence on the reflection coefficient is insignificant. The findings of this study provide important references for the structural optimization and engineering design of OWC breakwaters.
- wave energy,
- OWC-breakwater,
- combined wave-current action,
- physical model test,
- numerical simulations

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References(30)

References

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