VARIATION OF BURST SPEED OF ZACCO PLATYPUS WITH CHANGING BODY LENGTH AND FLOW VELOCITY

Kouki ONITSUKA, Juichiro AKIYAMA, Akiyoshi YAMAMOTO, Yohei IIGUNI
2008 PROCEEDINGS OF HYDRAULIC ENGINEERING  
1 正会員 博(工) 九州工業大学准教授 工学部建設社会工学科(〒804-8550 北九州市戸畑区仙水町1-1) 2 フェロー会員 Ph.D. 九州工業大学教授 工学部建設社会工学科 学生員 九州工業大学大学院 工学研究科博士前期課程 The burst speed is the highest swimming speed of fish. Fish can migrate through fishways, when the maximum velocity in fishways is smaller than the burst speed. Therefore it is necessary to understand the burst speed of fish. In this study, an investigation on the burst speed of Zacco platypus under the condition that the body length and flow velocity are changed was conducted.
more » ... he results show the swimming speed increases rapidly after starting swimming and acceleration decreases gradually. Finally, the swimming speed reaches to the burst speed. The burst speed divided by the body length decreases with an increase of the body length and increases with an increase of the flow velocity. The burst speed is generally known as a value ten times of the body length of fish. However, it was found that the burst speed of Zacco platypus is up to 30 times or more of the body length from the present experiments.
doi:10.2208/prohe.52.1183 fatcat:3xcpogi35vbudibxzcbwbkz3qy