Cover
Vol. 16 No. 1 (2020)

Published: June 30, 2020

Pages: 54-61

Original Article

The Influence of Concave Pectoral Fin Morphology in The Performance of Labriform Swimming Robot

Farah Abbas Naser 1 Mofeed Turky Rashid
1Electrical Engineering Department, University of Basrah, Basrah, Iraq
History
  • Received: April 15, 2020
  • Revised: May 6, 2020
  • Accepted: May 6, 2020
  • Available Online: May 7, 2020
DOI

https://doi.org/10.37917/ijeee.16.1.7

Abstract

Swimming performance underlies the biomechanical properties and functional morphology of fish fins. In this article, a pair of concave fin has been suggested, which is inspired from Labriform-mode Swimming fish. First, three concave fins with different sizes are proposed in order to choose the optimum size. All three fins have the same length but with different surface areas, such that each fin has an aspect ratio different from the others. Next, the complete design of the robot is suggested, the complete design of the body and pectoral fins were subjected to computational fluid dynamics (CFD) analysis to show the validity of the proposed model. Finally, the physical model is suggested and provided with 3D printer of Polylactic Acid (PLA) with a density of 1240 kg/ m3. The swimming robot fins have been examined by CFD analysis provided by Solidworks® to evaluate the highest thrust and lowest drag forces. The result showed that the optimum fin is the one with the lowest aspect ratio fin produces the highest drag, whereas the highest aspect ratio fin gives the lowest drag and thrust, therefore; a value of aspect ratio in between these two cases is chosen. While other types of examinations are based on motion analysis of the 3D design, the required motor torque is calculated in order to select a suitable servomotor for this purpose, which a HS-5086WP waterproof servomotor can achieve the calculated torque.

Keywords

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