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Volume 15, Issue 29 (4-2019)
Marine Engineering 2019, 15(29): 147-165 |
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Nahavandian M, Izadi A. Numerical Simulation of Flow Hydrodynamic Around Dolphin Body in Viscous Fluid. Marine Engineering 2019; 15 (29) :147-165
URL: http://marine-eng.ir/article-1-718-en.html
URL: http://marine-eng.ir/article-1-718-en.html
1- Amirkabir University of Technology
Abstract: (4914 Views)
The biomimetic and hydrodynamic study of aquatic animals is one of the most challenging computational fluid dynamics topics in recent studies due to the complexity of body geometry and the type of flow field. The movement of the aquatic body, and particularly the tail section and the corresponding movement of fluid around the body, causes an unsteady flow and requires a comprehensive study of the interaction of fluid and aquatic body which makes the analysis more complicated. In this research, the main purpose is to investigate the numerical simulation of hydrodynamic flow around the aquatic body regarding dolphin swimming condition. Specifically, considering the precise 2D geometry of a dolphin body, the studied parameters include the drag and lift coefficients, body movement and its effect on vorticity, pressure and velocity fields immediately around the body. According to the results it can be claimed that the body movement frequency and the length of tail motion highly affect the mentioned parameters.
Keywords: Numerical Simulation, Velocity and Pressure field, Drag and Lift Coefficients, Computational Fluid Dynamics, Moving Mesh
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