Performance analysis of a wave energy converter using numerical simulation technique  

作　　者：Mohammed Asid ZULLAH Deepak PRASAD Mohammed Rafiuddin AHMED Young-Ho LEE 

机构地区：[1]Graduate School,Korea Maritime University Dongsam-dong Youngdo-ku,Busan 606-791,Republic of Korea [2]Division of Mechanical Engineering,University of the South Pacific,Private Mail Bag,Laucala Campus,Suva,Fiji Islands [3]Division of Mechanical & Information Engineering,Korea Maritime University,Dongsam-dong Youngdo-ku,Busan 606-791,Republic of Korea

出　　处：《Science China(Technological Sciences)》2010年第1期13-18,共6页中国科学（技术科学英文版）

摘　　要：A general purpose viscous flow solver Ansys CFX was used to study a Savonius type wave energy converter in a 3D numerical viscous wave tank.This paper presents the results of a computational fluid dynamics(CFD) analysis of the effect of blade configuration on the performance of two Savonius rotors for wave energy extraction.A piston-type wave generator was incorporated in the computational domain to generate the desired incident waves.A complete OWC system with a 3-bladed Savonius rotor was modeled in a three dimensional numerical wave tank and the hydrodynamic conversion efficiency was estimated.The flow over the rotors was assumed to be two-dimensional(2D),viscous,turbulent and unsteady.The CFX code was used with a solver of the coupled conservation equations of mass,momentum and energy,with an implicit time scheme and with the adoption of the hexahedral mesh and the moving mesh techniques in areas of moving surfaces.Turbulence was modeled with the k-e model.The results indicated that the developed models are suitable to analyze the water flows both in the chamber and in the turbine.For the turbine,the numerical results of pressure and torque were compared for the two cases.A general purpose viscous flow solver Ansys CFX was used to study a Savonius type wave energy converter in a 3D numerical viscous wave tank.This paper presents the results of a computational fluid dynamics(CFD) analysis of the effect of blade configuration on the performance of two Savonius rotors for wave energy extraction.A piston-type wave generator was incorporated in the computational domain to generate the desired incident waves.A complete OWC system with a 3-bladed Savonius rotor was modeled in a three dimensional numerical wave tank and the hydrodynamic conversion efficiency was estimated.The flow over the rotors was assumed to be two-dimensional(2D),viscous,turbulent and unsteady.The CFX code was used with a solver of the coupled conservation equations of mass,momentum and energy,with an implicit time scheme and with the adoption of the hexahedral mesh and the moving mesh techniques in areas of moving surfaces.Turbulence was modeled with the k-e model.The results indicated that the developed models are suitable to analyze the water flows both in the chamber and in the turbine.For the turbine,the numerical results of pressure and torque were compared for the two cases.

关 键 词：wave energy Ansys CFX CODE SAVONIUS ROTOR NUMERICAL simulation TORQUE efficiency 

分 类 号：TK730[交通运输工程—轮机工程]