旋结构和流体力通过在水下波浪式游泳过程中改变全身动力学参数而改变
Takahiro Tanaka1,2, Satoru Hashizume2, Toshiyuki Kurihara3
1Graduate School of Sport and Health Science, Ritsumeikan University, Shiga, Japan.
Sports biomechanics
|July 10, 2023
概括
熟练的游泳者在水下波浪式游泳 (UUS) 时会产生更大,更有效的. 这种运动会产生更大的流体力,与未熟练的游泳者相比,增强推进力.
科学领域:
- 游泳的生物力学
- 体育运动中的流体动力学
- 人类的机动运动.
背景情况:
- 游泳者在水下波浪式游泳 (UUS) 过程中产生.
- 运动变化会影响结构和流体力.
- 了解这些动态是提高游泳速度的关键.
研究的目的:
- 为了调查熟练游泳者的运动是否会产生有效的和流体力,以增加UUS速度.
- 为了比较熟练和不熟练的游泳者之间的状特征和流体力.
- 为了确定动力学数据对推进的影响.
主要方法:
- 利用3D数字模型和从熟练和不熟练的游泳者获得的动态数据,在最大努力时进行UUS.
- 将运动数据输入到不同的游泳者模型 (熟练/不熟练) 中,以模拟各种运动场景.
- 运用计算流体动力学 (CFD) 来分析的区域,循环和峰值阻力.
主要成果:
- 熟练游泳者的动力学,当应用到不熟练游泳者的模型 (SK-USM) 时,产生了一个更大的,与不熟练游泳者的模型 (USK-USM) 相比,具有更大的腹部和后部循环.
- 非熟练游泳者的动力学,当应用于熟练游泳者的模型 (USK-SM),导致较小的和较弱的背部循环比熟练游泳者自己的模型 (SK-SM).
- SK-USM比USK-USM表现出更大的峰值阻力,表明更大的推进潜力.
结论:
- 熟练的游泳者在UUS期间产生更有效的推进.
- 熟练和不熟练的游泳者之间的动力学差异显著影响的动力学和流体力.
- 应用熟练的动力学模式可以提高推进效率,即使是在模拟的非熟练模型中.
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