摘要
采用风洞实验通过对在不同风速、不同气压下以及是否对称的球的飘晃距离和飘晃特点进行研究。结果表明:1)同一气压下,随着风速的不断增大,飘球产生的飘晃距离呈现先增大而后减小再增大的现象;2)不同气压下,飘球产生最大飘晃距离的临界速度均为10 m/s^15m/s,晃距约为0.5~0.6 m;3)气压对排球的飘晃影响不大,但球的对称与否会对飘球的晃动产生影响。
Through using the method of wind tunnel experiment ,this paper studied the floating distance and character of volleyball under the condition of different air pressure and wind speed. The result showed that with the increase of wind speed,the floating distance tended to increase first ,then decrease and finally increase under the same air pressure. The critical speed caused by maximal floating distance was 10m/s^lSm/s under the condition of different air pressure. The floating distance was about 0. 5~0.6m. The influence of air pressure on floating serves was not obvious ,but the symmetry of ball had influence on floating serves.
出处
《中国体育科技》
北大核心
2005年第5期87-89,共3页
China Sport Science and Technology
关键词
排球
发球
气压
风速
对称性
飘球
风洞实验
volleyball
serve
air pressure
wind speed
symmetry
floating serve
wind tunnelexperiment
