A hydrodynamic study of active drag in swimming

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概要

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• The purpose of this study is to measure active drag, which is dynamic drag acting on a self-propelling swimmer in water. We developed a new measurement device, which was capable of measuring active drag without disturbing natural swimming in a circulating water channel. Four collegiate skilled swimmers volunteered to participate in this study. The subjects were asked to swim front crawl and to keep the pre-determined stroke frequency within a range of 0 m / s to 1.8 m / s flow velocity. The active drag was estimated by means of the relationship between residual thrust(thrust minus the resistance)and passive drag(static drag acting on a prone position swimmer). As a result of these development, it was possible to measure active drag more precisely than before, and to obtain the experimental equation that predicted the active drag within a range of Reynolds number equaled the actual swimming velocity.

• 一般社団法人日本機械学会の論文
• 1999-05-15

著者

• Shimizu Yukimaru

  Faculty Of Engineering Mie University

• TAKAGI Hideki

  Faculty of Education, Mie University

• KODAN Norihisa

  NKK Co.Ltd.

• Takagi Hideki

  Faculty Of Education Mie University

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• A hydrodynamic study of active drag in swimming

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