摘要
研究通过对赛艇"Big Blade"桨叶的流体动力性能的数值模拟和试验研究以及理论分析,讨论了不同的划桨频率、浸水深度和划桨幅度等运动学参数和动力学参数对桨叶流体动力性能的影响,研究结果和结论:(1)桨叶与水之间的相对运动是桨叶产生作用力的根本原因;(2)随着桨叶浸水深度的增加,桨叶产生的作用力也在增加;(3)大的划桨幅度推进效率是比较低的。建议:划船器材的调整和划船技术都应围绕提高水下的拉桨速度来进行,提高拉桨频率不能够以牺牲桨叶的浸水深度为代价,更不能以牺牲频率来服从幅度。
A series of experiments and numerical simulation of the hydrodynamic performance of 'Big blade' scull were made and influence of some kinematic and dynamic parameters such as scull frequency,its depth in water and range on the hydrodynamic performance of the blade were discussed.It was concluded that the relative movement between the blade and water caused the acting force of the blade;the acting force of the blade increased with the deeper the blade went into the water;and large scull range produced comparatively low pushing.It is suggested that any improvement of equipment and technique should be made in light of the improvement of the stroke speed in the water; bigger stroke frequenc should not be achieved with less blade depth in water;and neither bigger range should be achieved by less frequency of scull.
出处
《体育科学》
CSSCI
北大核心
2001年第6期78-81,共4页
China Sport Science
基金
国家自然科学基金资助项目(10072045)
湖北省自然科学基金资助项目(99J018)
国家体育总局2000年奥运会赛艇运动生物力学科技服务项目
