CFD investigation of pitch-type wave energy converter-rotor based on RANS simulations. (25th November 2020)

• Record Type: Journal Article
• Authors: Poguluri, Sunny Kumar; Ko, Haeng Sik; Bae, Yoon Hyeok
• Is Part Of: Ships and offshore structures. Volume 15:Number 10(2020)
• Page Start: 1107
• Page End: 1119
• Publication Date: 2020-11-25
• Subjects: WEC-rotor -- CFD -- time domain simulations -- sensitivity analysis -- PTO damping moment; Ships -- Periodicals; Offshore structures -- Periodicals; Marine engineering -- Periodicals; Marine engineering -- Technological innovations -- Periodicals; Ocean engineering -- Periodicals; Ocean engineering -- Technological innovations -- Periodicals; 623.8
• DOI: 10.1080/17445302.2019.1705632
• Languages: English
• ISSNs: 1744-5302

Abstract

ABSTRACT: The hydrodynamic performance of wave energy converter (WEC)-rotors is studied with computational fluid dynamics (CFD) by using the Reynolds-Averaged Navier-Stokes equations. A thorough sensitivity analysis, which affects the solution accuracy, is performed, and the pros and cons associated with the influential parameters are discussed. In addition, the CFD results are validated against experimental data. Initially, the effectiveness of wave generation and absorption is tested by conducting a long-term simulations, and the accuracy of the simulation is assessed by comparing the results with those obtained using the fifth-order Stokes wave theory. The numerically simulated pitch response of the WEC-rotor remains steady for several periods, and the predicted results agree well with the experimental data. Finally, the selected settings are applied to investigate the prototype WEC-rotor along with the three-dimensional linear potential flow theory in the cases without and with power take-off (PTO) damping moment.