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<p>A strong movement towards decarbonization is currently ongoing in the energy sector. One technology contributing to this are shore-based wave power plants with an oscillating water column (OWC). In this work, a new one-dimensional simulation model of an OWC was set up in GT-SUITE. This model includes the air system, the water column dynamics, a new simplified approach to model the dynamics of horizontal channel opening and a simple orifice turbine approach with fixed efficiency. The simulation model was used to describe the general system behavior and to perform a parameter study on the system setup and components considering the west coast of Shetland Islands, Scotland as a new potential system location. To understand the influence of single parameter changes and cross-sensitivities, the outcome of the parameter study in terms of relevant time-averaged and time-resolved performance parameters was analyzed on a high technical level. The results from the parameter study were transferred to a theoretical and non-dimensional turbine design study. Using work extraction and dimensionless speed-efficiency plots, the influence of system design parameters and environmental conditions on working machine principle, turbine speed and a potential maximum efficiency could be determined. Although a turbine approach without speed consideration was used, also the influence of gas pulsations on turbine efficiency could be estimated. As a result from the turbine study, the turbine design for wave power plant set-ups at Shetland Islands could be indicated.</p>

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Simulative investigation of a shore-based OWC ocean wave energy plant and its turbine

  • 期刊论文

  • 发表日期：

    2025年10月6日

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  • Dario-Vincenzo Di Modica,
  • Lee Gibson,
  • Georgios Iosifidis,
  • Roberto DeSantis

摘要

A strong movement towards decarbonization is currently ongoing in the energy sector. One technology contributing to this are shore-based wave power plants with an oscillating water column (OWC). In this work, a new one-dimensional simulation model of an OWC was set up in GT-SUITE. This model includes the air system, the water column dynamics, a new simplified approach to model the dynamics of horizontal channel opening and a simple orifice turbine approach with fixed efficiency. The simulation model was used to describe the general system behavior and to perform a parameter study on the system setup and components considering the west coast of Shetland Islands, Scotland as a new potential system location. To understand the influence of single parameter changes and cross-sensitivities, the outcome of the parameter study in terms of relevant time-averaged and time-resolved performance parameters was analyzed on a high technical level. The results from the parameter study were transferred to a theoretical and non-dimensional turbine design study. Using work extraction and dimensionless speed-efficiency plots, the influence of system design parameters and environmental conditions on working machine principle, turbine speed and a potential maximum efficiency could be determined. Although a turbine approach without speed consideration was used, also the influence of gas pulsations on turbine efficiency could be estimated. As a result from the turbine study, the turbine design for wave power plant set-ups at Shetland Islands could be indicated.