Experimental and numerical investigations on wave dynamics of a dual-chamber OWC wave energy device

De-Zhi Ning, Rong-Quan Wang, Bin Teng, Qing-Ping Zou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Oscillating Water Column (OWC) wave energy device is one of the most studied and applied wave energy converters (WECs). The survivability of WECs is a major concern in the OWC design. In this study, the wave dynamics of a dual-chamber OWC device is numerically and experimentally investigated. The experimental tests were carried out in the wave-current flume at the State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology. A fully nonlinear numerical wave flume based on potential-flow theory and time-domain higher-order boundary element method (HOBEM) is developed and applied to simulate the interaction between air, wave and the dual-chamber OWC device. The numerical model is validated by comparing the simulated wave induced pressure on the barrier walls with the measurements. Then the wave forces and the moment on the device is numerically investigated. The model and experimental results indicate that the horizontal wave force on the front barrier wall is much larger than that on the internal barrier wall. The joint between the back wall and the ground withstands the largest bending moment, therefore, is most vulnerable to structure damage and fatigue.
Original languageEnglish
Title of host publicationProceedings of the ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering
PublisherAmerican Society of Mechanical Engineers
Number of pages7
Publication statusAccepted/In press - 11 Feb 2019
Event38th International Conference on Ocean, Offshore and Arctic Engineering 2019 - Glasgow, United Kingdom
Duration: 9 Jun 201914 Jun 2019

Conference

Conference38th International Conference on Ocean, Offshore and Arctic Engineering 2019
Abbreviated titleOMAE 2019
CountryUnited Kingdom
CityGlasgow
Period9/06/1914/06/19

Fingerprint

Water
Potential flow
Bending moments
Boundary element method
Numerical models
Fatigue of materials
Air

Keywords

  • OWC
  • Wave Energy Converter
  • Wave force
  • Physical test
  • HOBEM

Cite this

Ning, D-Z., Wang, R-Q., Teng, B., & Zou, Q-P. (Accepted/In press). Experimental and numerical investigations on wave dynamics of a dual-chamber OWC wave energy device. In Proceedings of the ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering [OMAE2019-95165] American Society of Mechanical Engineers.
Ning, De-Zhi ; Wang, Rong-Quan ; Teng, Bin ; Zou, Qing-Ping. / Experimental and numerical investigations on wave dynamics of a dual-chamber OWC wave energy device. Proceedings of the ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019.
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abstract = "Oscillating Water Column (OWC) wave energy device is one of the most studied and applied wave energy converters (WECs). The survivability of WECs is a major concern in the OWC design. In this study, the wave dynamics of a dual-chamber OWC device is numerically and experimentally investigated. The experimental tests were carried out in the wave-current flume at the State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology. A fully nonlinear numerical wave flume based on potential-flow theory and time-domain higher-order boundary element method (HOBEM) is developed and applied to simulate the interaction between air, wave and the dual-chamber OWC device. The numerical model is validated by comparing the simulated wave induced pressure on the barrier walls with the measurements. Then the wave forces and the moment on the device is numerically investigated. The model and experimental results indicate that the horizontal wave force on the front barrier wall is much larger than that on the internal barrier wall. The joint between the back wall and the ground withstands the largest bending moment, therefore, is most vulnerable to structure damage and fatigue.",
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Ning, D-Z, Wang, R-Q, Teng, B & Zou, Q-P 2019, Experimental and numerical investigations on wave dynamics of a dual-chamber OWC wave energy device. in Proceedings of the ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering., OMAE2019-95165, American Society of Mechanical Engineers, 38th International Conference on Ocean, Offshore and Arctic Engineering 2019, Glasgow, United Kingdom, 9/06/19.

Experimental and numerical investigations on wave dynamics of a dual-chamber OWC wave energy device. / Ning, De-Zhi; Wang, Rong-Quan; Teng, Bin; Zou, Qing-Ping.

Proceedings of the ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. OMAE2019-95165.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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T1 - Experimental and numerical investigations on wave dynamics of a dual-chamber OWC wave energy device

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AU - Teng, Bin

AU - Zou, Qing-Ping

PY - 2019/2/11

Y1 - 2019/2/11

N2 - Oscillating Water Column (OWC) wave energy device is one of the most studied and applied wave energy converters (WECs). The survivability of WECs is a major concern in the OWC design. In this study, the wave dynamics of a dual-chamber OWC device is numerically and experimentally investigated. The experimental tests were carried out in the wave-current flume at the State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology. A fully nonlinear numerical wave flume based on potential-flow theory and time-domain higher-order boundary element method (HOBEM) is developed and applied to simulate the interaction between air, wave and the dual-chamber OWC device. The numerical model is validated by comparing the simulated wave induced pressure on the barrier walls with the measurements. Then the wave forces and the moment on the device is numerically investigated. The model and experimental results indicate that the horizontal wave force on the front barrier wall is much larger than that on the internal barrier wall. The joint between the back wall and the ground withstands the largest bending moment, therefore, is most vulnerable to structure damage and fatigue.

AB - Oscillating Water Column (OWC) wave energy device is one of the most studied and applied wave energy converters (WECs). The survivability of WECs is a major concern in the OWC design. In this study, the wave dynamics of a dual-chamber OWC device is numerically and experimentally investigated. The experimental tests were carried out in the wave-current flume at the State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology. A fully nonlinear numerical wave flume based on potential-flow theory and time-domain higher-order boundary element method (HOBEM) is developed and applied to simulate the interaction between air, wave and the dual-chamber OWC device. The numerical model is validated by comparing the simulated wave induced pressure on the barrier walls with the measurements. Then the wave forces and the moment on the device is numerically investigated. The model and experimental results indicate that the horizontal wave force on the front barrier wall is much larger than that on the internal barrier wall. The joint between the back wall and the ground withstands the largest bending moment, therefore, is most vulnerable to structure damage and fatigue.

KW - OWC

KW - Wave Energy Converter

KW - Wave force

KW - Physical test

KW - HOBEM

M3 - Conference contribution

BT - Proceedings of the ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering

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Ning D-Z, Wang R-Q, Teng B, Zou Q-P. Experimental and numerical investigations on wave dynamics of a dual-chamber OWC wave energy device. In Proceedings of the ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers. 2019. OMAE2019-95165