【作者】 杨勇； 邹早建； 楼鹏宇；

【Author】 YANG Yong,ZOU Zao-jian,LOU Peng-yu (1.School of Naval Architecture,Ocean and Civil Engineering.Shanghai,200240, 2.State Key Laboratory of Ocean Engineering.Shanghai Jiao Tong University,Shanghai,200240)

【机构】 上海交通大学船舶海洋与建筑工程学院； 上海交通大学海洋工程国家重点实验室；

【摘要】 本研究应用CFD通用软件Fluent,通过使用动网格和滑移网格技术,对约束船模小振幅平面运动机构(PMM)试验的非定常黏性流场进行数值模拟。假设船舶航速很小,自由面兴波的影响可以忽略。以大型油轮KVLCC1模型为研究对象,对其在深水和浅水中的PMM试验纯横荡运动及在浅水中的PMM试验纯首摇运动黏性流场进行了数值模拟,计算了作用在船体上的横向力和首摇力矩;通过将本文的计算结果与现有的试验数据进行对比,验证了本文数值方法的有效性。在此基础上,分析了摇荡运动幅值和频率对水动力的影响,并由横向力和首摇力矩的计算结果得到了操纵运动线性水动力导数。更多还原

【Abstract】 By applying the dynamic mesh and sliding mesh techniques,the general-purpose CFD software Fluent is used to simulate the unsteady viscous flow about a captive model in PMM tests with small amplitude.The ship speed is assumed to be small,so that the influence of wave-making is negligible.A KVLCCl ship model is taken as example for numerical study.The viscous flow of pure-sway motion in deep and shallow water and pure-yaw motion in shallow water is numerically simulated.The hydrodynamic lateral force and yaw moment acting on the ship model are calculated.The numerical method is validated by comparing the numerical results with the available test data.On this basis,the influence of motion amplitude and frequency on the hydrodynamic force and moment are analyzed. The linear hydrodynamic derivatives are obtained from the calculated hydrodynamic lateral force and yaw moment.更多还原