基于数值模拟的激光级帆船船体水动力性能研究张志勇1,2，马勇2[+].docVIP

基于数值模拟的激光级帆船船体水动力性能研究 张志勇1, 2，马勇2(，1, 2，1, 2，，1, 2 1、武汉体育学院，武汉，430079 、武汉体育学院体育工程与信息技术学院，运动干预与健康促进湖北省协同创新中心，国家体育总局体育工程重点实验室，武汉，430079、，， 摘要：激光雷迪尔级是奥运会帆船比赛项目，为了解其船体的水动力性能，利用CFD数值模拟方法对激光雷迪尔级帆船船体不同航速条件下的水动力性能进行计算。研究发现：航速对于船体的阻力大小影响低航速条件下粘性阻力起主导作用航速增到的一定程度，压差阻力成为主导因素。船体低航速行驶水面很小，船体两侧流线呈对称分布；高航速下船体对水面影响很大，导致船体两侧受力不对称。船体阻力、压力分布等随航速变化的规律为帆船运动员进行帆船船体调整提供了科学依据。 关键词：帆船；船体；阻力；数值模拟；压力 InvestigationHydrodynamics for Laser class Based on Numerical Simulation Zhang Zhiyong1, Ma Yong1,2, Lin Shijie1, Zheng Qinzhen1, TANG Ji-tao3Yu Gongyun1, 1.Graduate school of Wuhan Sports University, Wuhan, 430079, P.R. China 2. School of Sports Engineering and Information Technology, Hubei Provincial Collaborative Innovation Centre for Exercise and Health Promotion and Key Laboratory of Sports Engineering of General Administration of Sport of China, Wuhan Sports University, Wuhan, 430079, P.R. China 3. Guangdong Marine Sports Training Center, Shanwei, 516623, P.R. China Abstract: In order to obtain hull hydrodynamic performance for Laser Radial class hull which is one of the Olympic Game sailing events, CFD method was used to calculate the hydrodynamic performance under different speeds. At low speeds, the speed has a huge effect on the drag resistance of the hull, the viscous drag resistance plays leading roles, the water is less affected by the hull and the flow line beside both sides of the hall is symmetrical. At high speeds, the pressure drag resistance is the dominant factor; the hull has a?significant?impact on the water and there is an asymmetric force on both sides of the hull. The discipline of the hull drag resistance, pressure distribution under different speeds provides a scientific basis for the sailors to trim the hull. Key words: sailboat; hull; drag resistance; numerical simulation; pressure 引言 由于教练员和运动员一般不具备的专业船舶流体力学知识，他们对帆船器材流体动力性能的了解很多局限于经验方法[1]，而帆船船体水动力性能对于帆船的推进性、操作性等有较大影响[2]，所以为了能够为运动员合理操作帆船提供技术支持，应加强帆船水动力性能研究。 近年来，Akimoto等（2002）[3]采用动网格技术在考虑自由面的情况下通过求解六自由度操纵方程，预报了船体的流体动力性能