Direct Numerical Simulation of Self - Propelled Swimming of 3 D Bionic Fish School † Chui
نویسنده
چکیده
Direct numerical simulation of self-propelled swimming of three dimensional bionic fish and fish school in a viscous flow in a tank are investigated. The swimming rule and the profile of 3D fish from previous experimental measurements of living fish are used in the study. A parallel software package for the 3D moving boundary problem is obtained, which combines the adaptive multi-grid finite volume method and the methods of immersed boundary and VOF (Volume of Fluid). With the CFD package the results of the self-propelled swimming and control of a 3D bionic fish and fish school in a viscous fluid is obtained.
منابع مشابه
A Bionic Neural Network for Fish-Robot Locomotion
A bionic neural network for fish-robot locomotion is presented. The bionic neural network inspired from fish neural network consists of one high level controller and one chain of central pattern generators (CPGs). Each CPG contains a nonlinear neural Zhang oscillator which shows properties similar to sine-cosine model. Simulation results show that the bionic neural network presents a good perfo...
متن کاملResearch on Under-actuated Flexible Pectoral Fin of Labriform Fish
The new propulsor, whose inspiration is from pectoral fins of fishes, has arisen increasing attention. To improve the performance of the existing labriform bionic pectoral fin, based on the structure and control mechanism of real fish pectoral fin, the under-actuated technology was utilized to design a new flexible bionic pectoral fin. Then, the kinematic model of pectoral fin during fish forwa...
متن کاملThrust Analysis On A Single-Drive Robotic Fish With An Elastic Joint
This work simplified tuna’s swimming mode, then designed a single-drive robotic fish propulsion mechanism which including an elastic joint, and established the dynamics model of the mechanism. The thrust, resistance, resistance power on different peduncle oscillation parameters, and torsional stiffness of the caudal fin joint was simulated. The average thrust, maximum resistance and the average...
متن کاملHydrodynamic Experimental Investigation on Efficient Swimming of Robotic Fish Using Self-propelled Method
Efficient swimming of biologically carangiform robotic fish has been investigated by using a novel experimental method. The laboratory robotic fish model, which follows an exact replica of Saithe, is self-propelled on a servo towing system. The forward towing speed is determined by the fluid force acting on the robotic fish, as the fish undulates its body in the water. The importance of the sel...
متن کاملSynchronised Swimming of Two Fish
We study the fluid dynamics of two fish-like bodies with synchronised swimming patterns. Our studies are based on two-dimensional simulations of viscous incompressible flows. We distinguish between motion patterns that are externally imposed on the swimmers and self-propelled swimmers that learn manoeuvres to achieve certain goals. Simulations of two rigid bodies executing pre-specified motion ...
متن کامل