Numerical simulation of the wake of marine current turbines with a particle method

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• 作者：Gr&eacute ; gory Pinon^a ; ^{gregory.pinon@univ-lehavre.fr} ; Paul Mycek^a ; ^b ; Gr&eacute ; gory Germain^b ; Elie Rivoalen^c ; ^a
• 关键词：Numerical computations ; Marine current turbine ; Hydrodynamic ; Power and thrust coefficients ; Wake
• 刊名：Renewable Energy
• 出版年：2012
• 期刊代码：45_09601481
• 类别：pw
• 出版时间：October, 2012
• 卷：46
• 期：Complete
• 页码：111-126
• 文件大小：1388 K

摘要

This paper presents numerical computations of three bladed horizontal axis marine current turbines in a uniform free upstream current. The unsteady evolution of the turbine wake is taken into account by some three-dimensional software, developed to assess the disturbances generated in the sea. An unsteady Lagrangian method is considered for these computations using 鈥漋ortex Method鈥? a velocity-vorticity numerical implementation of the Navier-Stokes equations. The vortex flow is discretised with particles carrying vorticity, which are advected in a Lagrangian frame. The present paper aims at presenting results on both power and thrust coefficient (C_P and C_T) predictions and wake characterisation, up to ten diameters downstream of the turbine. Moreover, two different marine current turbines configurations are considered: one is taken from literature and the second one is an open-modified version of turbine inspired from previous works .