摘要
利用数值模拟方法对不同扣角和倾角下的升力系数、阻力系数、力矩系数以及帆翼底部流场进行分析,发现帆翼扣角以后帆翼升力系数、阻力系数都变小,垂直水平面上力系数增加很多,这个力增加可以减小船体阻力、有利于帆船行驶。另外,帆翼扣角以后帆翼力矩有不同程度的减小,这对于帆船行驶来说是有利的,可以减小帆船倾斜。单独从升力来看倾角为-10°是有利的。
The lift coefficient, drag coefficient, moment coefficient and flow field of the sail bottom were analyzed when there were different pitch angles. If the sail was pitched with the direction of the athlete, the lift coefficient would decrease, but the upward force coefficient would enhance awfully. So, it would be propitious to decrease the resistance of the hull and enhance the speed of the sail- ing. The pitch with the direction of the stern would enhance the lift coefficient of the sails and the speed of the sailing. The research would be contributed to trimmin~ the sails during the sailing.
出处
《山东体育学院学报》
北大核心
2012年第5期52-54,共3页
Journal of Shandong Sport University
基金
国家自然科学基金(51009113)
国家科技支撑计划(2012BAK23B05)
国家体育总局奥运会科研攻关项目(2011A025
09B030)
湖北省教育厅科学技术研究项目(Q200933002)资助
关键词
帆船
帆翼
扣角
倾角
升力
阻力
sail
pitch angle with the direction athlete
pitch angle with the direction stem
littforce
drag force
