Ferrofluid Appendages: Fluid Fins, a Numerical Investigation on the Feasibility of using Fluids as Shapeable Propulsive Appendages
Author(s):
Abstract:
The present study focuses on the feasibility of using fluids, and in particular magnetic fluids, as Fluid Structures in designing external appendages for the submerged bodies and propulsive fins as a practical example. After reviewing the literature of the mathematical simulation of magnetic fluids and their applications, the concept of Fluid Structures and Fluid Fins are briefly introduced. The validation of the numerical solver against analytical solutions is presented and acceptable error of 1.21% up to 2.29% is estimated. Subsequently, the initial shaping of the ferrofluid as an external fluid fin, using three combinations of internal magnetic actuators, is presented which makes the way to the oscillating motion of the obtained fin, by producing a periodically changing magnetic field. It is demonstrated that the shape of the fluid fin is almost the replica of the magnetic field. On the other hand, it is illustrated that a fluid fin with a size under 0.005 m on a circular submerged body of 1cm diameter could produce 0.0158 N force which is a high thrust force relative to the size of the body and the fin. Based on the obtained results, one may conclude that, when a Fluid Fin is capable of producing this amount of thrust, other fluid appendages could be scientifically contemplated and practically designed.
Keywords:
Language:
English
Published:
Journal Of Applied Fluid Mechanics, Volume:10 Issue: 2, Mar-Apr 2017
Pages:
615 to 623
https://magiran.com/p1673349
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