Hydrodynamic analysis of a novel wave energy converter: Hull Reservoir Wave Energy Converter (HRWEC)

Gunawardane, S.D.G.S.P.; Bandara, G.A.C.T.; Lee, Young-Ho

doi:10.1016/j.renene.2021.01.140

Cited by 12 publications

(4 citation statements)

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“…The maximum capture factors were obtained at 0.3,1, 15 and 15 kN.m.s/ rad and capture factors were 49.8%, 42%,53.2% and 40.1% for reference case, case 2, case 3 and case 4 respectively. According to the figure 13, it is clear that the case 3 has best performance under the regular wave conditions for higher damping coefficients [2] while case 1 has better performance for smaller damping coefficients. These results suggest that the inclusion of a fluid inside the hull has an impact towards its capture factor.…”

Section: Aqwa Results Analysismentioning

confidence: 97%

“…The main objective of AQWA analysis is to capture the motion of the flap and the hull of WEC within a given wave condition. Table 2 & 3 indicate the inputs for ANSYS AQWA model which were taken to exactly match them to the parameters of the PeWEC [2,3,15] and the parameters involved in the two tables are shown in figure 5. Features and dimensions of the HRWEC are given in table 2.…”

Section: Implemented Methods and Simulationmentioning

confidence: 99%

“…One of the main reasons for this is most of the novel devices are made to suit the closest sea conditions and when these are tested elsewhere a noteworthy performance was not to be seen. This paper discusses implemented method of CFD analysis of hull reservoir flap type wave energy converter (HRWEC) [2] a hybrid concept of Pendulor wave energy device and Pendulum wave energy converter (PeWEC) [2,3]. These types of novel devices have been the topic for research during recent times and some of the emerging concepts are discussed in following references [4,5,6].…”

Section: Introductionmentioning

confidence: 99%

“…However, due to the multiple modes of interaction, it is inevitably hard to analyze such a system with many analysis methods. Figure 1 and 2 show the modes representation and artistic impression (interior of the device once outer cover is removed) [2,3] of the HRWEC respectively. However, numerical analysis using CFD codes have been extremely popular due to its ability to model any complicated model and also because results can be extracted with high convergence showing excellent accuracy [10].…”

Section: Introductionmentioning

confidence: 99%

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Computational fluid dynamic simulation of hull reservoir wave energy device

Alwis

Silva

Gunawardane

et al. 2022

J. Phys.: Conf. Ser.

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This paper presents a Computational Fluid Dynamics (CFD) analysis of a wave energy device called the Hull Reservoir Wave Energy Converter (HRWEC). The device consists of a floating hull and a flap connected to the shaft of power take-off system (PTO), which is integral to the hull structure. It is unique due to its ability to convert wave energy by utilizing the pitch motion of the hull and rotating flap due to the internal water movement in the hull. Due to the complexity of the internal fluid dynamics, a CFD-based analysis was considered most appropriate. The CFD investigation of the dynamics of the device was done under regular wave conditions by using the ANSYS-AQWA and ANSYS FLUENT. Relative pitch angle variation, the hydrodynamic coefficients, which determine the degree of power extraction, were obtained from simulated results. A simulation was designed exhibiting complete system dynamics for different configurations varying on internal water height. Excellent convergence was observed, and an optimum configuration was identified. It is expected to validate the simulation results through experiments in the foreseeable future.

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Section: Aqwa Results Analysismentioning

confidence: 97%

Section: Implemented Methods and Simulationmentioning

confidence: 99%