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| Numerical simulation on the correlation between body pressure and curvature of juvenile Ctenopharyngodon idellus |
| Received:January 18, 2021 Revised:June 18, 2021 |
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| DOI：10.7511/jslx20210119003 |
| KeyWord:juvenile Ctenopharyngodon idellus PIV numerical simulation curvature pressure |
| Author | Institution |
| 杨国党 |
三峡大学 水利与环境学院, 宜昌 |
| 胡晓 |
三峡大学 水利与环境学院, 宜昌 |
| 石小涛 |
三峡大学 水利与环境学院, 宜昌 |
| 余英俊 |
武汉大学 水利水电学院, 武汉 |
| 张奔 |
三峡大学 水利与环境学院, 宜昌 |
| 龙泽宇 |
三峡大学 水利与环境学院, 宜昌 |
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| Abstract: |
| In order to study the relationship between the body fluid pressure and the body curvature of the juvenile Ctenopharyngodon idellus in a steady swimming state,this paper uses a combination of PIV (Particle Image Velocimetry) measurement and numerical simulation to quantitatively analyze the body fluid pressure and the fish body curvature of the juvenile Ctenopharyngodon idellus.The results show that the three-time fitting of the fish body amplitude curve is more consistent with the measured results of the PIV in the juvenile body fluid pressure obtained from the traditional quadratic fitting curve,in the middle and tail of the juvenile fish,and the midline of the fish body Curvature and body surface curvature show a relatively obvious linear relationship (P<0.05),and the fluid pressure of the juvenile body in the first half of the movement cycle and the curvature of the fish body surface and midline also show a linear relationship (P<0.05).The curvature of the midline of the middle part lags behind the fluid pressure around the body,while the curvature of the midline of the tail and head of the juvenile fish is basically consistent with the change trend of the fluid pressure on the upper and lower sides of the fish. |
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