مقاله Numerical simulation of batoid locomotion : تی پی بین

خلاصه مقاله

The hydrodynamics of batoid swimming motions is investigated using the three-dimensional simulation of a self-propelled body in still water. The kinematics of batoid swimming is characterized by large amplitude undulations of the pectoral fins while the middle part of the body remains straight. The majority of the thrust is generated by pectoral fins. Linear and quadratic amplitude variations are used for the pectoral fins in analyzing the locomotion of the batoid. Navier-Stokes equations are used to solve the unsteady fluid flow. A user defined function and a dynamic mesh method are applied to track the batoid locomotion. The mean swimming velocities of 1.6 BL/s and 1.3 BL/s are achieved, respectively, with thrust coefficients of 0.13 in and 0.095 in the dynamical simulation, where BL/s is the body length per second. The maximum propulsive efficiency 19% is achieved when the frequency of the undulation is 2.2 Hz in both amplitude variations.

نویسندگان

Wei-shan CHEN [ State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China ]

Zhi-jun WU [ State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China ]

Jun-kao LIU [ State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China ]

Sheng-jun SHI [ State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China ]

Yang ZHOU [ State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China ]

کلمات کلیدی

batoid fish undulation pectoral fin dynamical simulation

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مشاهده مقالات

Journal of Hydrodynamics

The Journal of Hydrodynamics reflects the research activities in various areas of hydrodynamics related to ocean and ship engineering, environmental engineering, water conservancy and hydropower engineering, energy exploration, ocean and environmental engineering, and chemical engineering. These cover ship hydrodynamics, wave load and fluid-solid interactions, turbulence and boundary layer, cavitating flow and cavitation mechanics, multi-phase flow, pipe flow and open ditch flow, convection and diffusion, heat and mass transfer, bio-fluid mechanics, permeation fluid mechanics and other frontier disciplines. The journal presents the latest achievements in developing physical models and computational methods, theoretical and experimental studies, software development and test technologies. It offers a platform for exchanging experiences and information, enlivening academic thoughts and promoting the further development of hydrodynamic research and its applications in China and elsewhere.

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