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基于三维势流理论和多体动力学方法,建立双轴铰接波浪发电装置多体水动力模型。将其能量捕获系统等效成刚度-阻尼模型,对其进行不规则波浪海况下的时域数值计算。对比不同波浪入射角、刚度和阻尼取值对波浪发电装置能量吸收的影响。结果表明:在0°~90°范围内,能量吸收功率随着波浪入射角的增大而先增大后减小,当波浪以60°方向入射时,能量吸收功率接近最大;在不同海况下,存在与之对应的最优刚度及阻尼参数取值;此外,在纵摇方向和艏摇方向设置不同的阻尼系数与刚度系数,可以使能量吸收最大化。
Based on the three-dimensional potential flow theory and multi-body dynamics method, a multi-body hydrodynamic model of a biaxial articulated wave power plant is established. The energy harvesting system is equivalent to a stiffness-damping model, which is used to calculate the time domain under the condition of irregular waves. The influence of different wave incident angle, stiffness and damping value on the energy absorption of wave power plant is compared. The results show that the energy absorption power first increases and then decreases with the increase of the incident angle of waves in the range of 0 ° to 90 °. When the waves are incident at 60 °, the energy absorption power approaches the maximum. Under different sea conditions , There are corresponding optimal stiffness and damping parameter values; In addition, in the pitch direction and yaw direction to set different damping coefficient and stiffness coefficient, can maximize the energy absorption.