Numerical study of fixed Oscillating Water Column with RANS-type two-phase CFD model

RENEWABLE ENERGY

卷:102

Article

Vyzikas, Thomas¹  Deshoulieres, Samy²  Giroux, Olivier³  Barton, Matthew¹  Greaves, Deborah¹ 

[1] Univ Plymouth, Sch Marine Sci & Engn, Plymouth PL4 8AA, Devon, England

[2] Ecole Cent Marseille, 38 Rue Frederic Joliot Curie, F-13013 Marseille, France

[3] Ecole Natl Super Mines Nantes, 4 Rue Alfred Kastler, F-44300 Nantes, France

关键词: CFD;    OWC;    Validation;    OpenFOAM;    Waves2Foam;    Hydrodynamics;   

DOI  :  10.1016/j.renene.2016.10.044

来源: Elsevier

【 摘 要 】

Various studies investigated the behaviour and the performance of Oscillating Water Columns (OWCs) suggesting many alternative design concepts to improve the efficiency of the device. The OWCs examined here are fixed on the seabed and have a slit opening at the seaward side. The present study investigates the applicability of a multiphase Reynolds Averaged Navier-Stokes (RANS) numerical model for simulating the interaction between an OWC and regular and irregular waves. An initial validation of the open source computational fluid dynamics (CFD) software package OpenFOAM with the wave generation and absorption toolbox waves2Foam is performed against experimental results obtained at the COAST laboratory of the University of Plymouth. The main aim of the study is to complement to the validation of RANS CFD models and later employ the broadly used numerical tool for further studies for better understanding the behaviour of the OWCs. A method based on mechanical damped oscillations for calculating the eigen frequency of the device from a decay test is presented and compared with the performance curve. The strength of CFD modelling for obtaining better insight to the hydrodynamics of OWCs is also demonstrated. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

Free