Hydrodynamic Investigation of Manta Ray MotionUsing Numerical Methods

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Safari, Hadi | 2014

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 45778 (08)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Abbaspour, Majid
Abstract:
The idea of using under water vehicles inspired by nature has gained considerable attention during the past few decades. This interest is due to the advantages of swimming and moving by this technique, in comparison with the conventional methods. Benefits are such as increasing speed, improved power, better manoeuvre ability,greater stability, optimal hydrodynamic performance ... etc. The purpose of this study was developing a model to simulate a stingray Manta Ray moving behaviour. Ansys- Fluent software was applied to solve the related equations of viscous laminar flow in 3-D form.Simulation of Manta Ray was performed with the flapping pectoral fin with dynamic mesh. Using this technique,it is possible to calculate the produced thrust. The values depend on the frequency and amplitude of fin. This causes the drag and thrust forces to behave in an oscillatory manner. This information can be applied to find the fish motion equation, as well as, other control parameters. This information can be applied to design stingray Manta Ray robot
Keywords:
Computational Fluid Dynamics (CFD) ; Finite Volume Method ; Dynamic Mesh ; Hydrodynamic Coefficients ; Manta Ray

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