Abstract—Quantitative morphological and kinematic parameters of fish movement have been studied here. BCF mechanism of two carangiform fish was taped by high speed digital video and undulatory movement of each fish at different velocity was revealed. The amplitude of this wave increases dramatically near the tail and it is very small near the head. Undulatory movement of Pangasius sanitwongsei and Trout with different length and speed were recorded by the digital particle image velocimetry (DPIV) and image processing methods and optimal coefficients of the movement equations and appropriate location of joints are experimentally derived. The velocity of fish movement can be adjusted by changing oscillating amplitude, frequency and the length of caudal fin, respectively. Finally finding in these researches could be applied to design a fish robot.
Index Terms—Undulatory movement equation, fish robot, DPIV, Pangasius, Trout.
Ali Sadr Vaghefi is with the Department of Mechanical Engineering, Yadegar-e-Imam Khomeini (RAH) Shahre Rey Branch, Islamic Azad University (IAU), Tehran, Iran (e-mail: sadrvaghefi@yahoo.com).
Majid Abbaspour is with the Department of Mechanical Engineering, Sharif University of Technology (SUT), Iran.
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Cite: A. S. Vaghefi and M. Abbaspour, "Hydrodynamics Analysis of Fish Movement in Steady Swimming for Modeling of Fish Robot," International Journal of Materials, Mechanics and Manufacturing vol. 6, no. 4, pp. 250-254, 2018.
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