在划臂过程中手指间隙的变化对游泳推进力的贡献作用的探讨

Discussion on Influence from Change by Fingers Apart During Armstroke at Countribution in Swimming Propulsion

依据阻力与速度的平方成正比这一流体动力学基础定律 ,以创新的思维形式提出手指分开划水这种新的划臂技术 ,它的理论基础依据为手掌的阻力系数与手掌对水的有效表面积成一次方函数关系 ,而手掌的阻力系数与手掌的划水速度则为二次方关系。由此可推论 ,手指分开划水可在高速划水过程中增大它的对水表面积 ,而且它的推进力系数则以平方级数增加。

According the law of physics about that the drag goes up by the square as the increasing speed of an object moved through water,a new technique of armstroke with finger apart is raised in the paper .The theory that is relied on the drag coefficient is the linear function relation with the surface of hand,but increased by the equation of quadratic with the hand speed .So conclusion is that the technique of fingers apart can be added the effective surface on the hand area during armstroke with the high speed and also the force of propulsion is increased in the square.