A computational fluid dynamics analysis of oscillating bluefin tuna foil propulsion

There is an on-going interest in analysing the flow characteristics of swimming fish-like bodies. Bio-inspired aquatic life has inspired some efficient and optimum designs for mankind. The design of both aerial and underwater vehicles has advanced over last few decades and new propulsion methods...

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Main Author:	Taray, Insha Ahmed
Format:	Thesis
Language:	English
Published:	2021
Subjects:	Computational fluid dynamics Fishes - Locomotion Engineering design
Online Access:	http://psasir.upm.edu.my/id/eprint/105985/1/INSHA%20AHMED%20TARAY%20-%20IR.pdf
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id	my-upm-ir.105985
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spelling	my-upm-ir.1059852024-03-21T01:31:32Z A computational fluid dynamics analysis of oscillating bluefin tuna foil propulsion 2021-03 Taray, Insha Ahmed There is an on-going interest in analysing the flow characteristics of swimming fish-like bodies. Bio-inspired aquatic life has inspired some efficient and optimum designs for mankind. The design of both aerial and underwater vehicles has advanced over last few decades and new propulsion methods are being considered to further improve the existing designs. The study of fish locomotion has resulted in some very efficient motions and it has become an interest among scientists to formulate these motions. One such motion is thunniform locomotion (which means to swim like tuna) in which the undulations are confined to the tail (peduncle and caudal-fin) only. Bluefin tuna employs thunniform locomotion and has been associated with a high propulsive efficiency but with less experimental and computational base. Computational fluid dynamic analysis was done using Ansys Fluent for typical range of Strouhal numbers (0.183, 0.281 and 0.413) on a tuna-like body investigating the hydrodynamic forces and flow patterns of the tuna-swimming wake; the time-averaged resultant thrust for above three cases were found to be 0.728 N, 0.803 N and 0.9538. It is seen that higher the value of Strouhal number, more are the shed vortices in the wake. The thunniform motion designed in this study was compared with the existing 3D experimental studies through physical entity of thrust. The vortex shedding was recorded and visualized using curl of velocity and helicity method for vortex core region. The scope of this research has consequences in the design of aircrafts, airships, UAV’s, UUV’s, submarine-launched UAVs, winged vehicles to the jet-propelled take-off and submarines. Computational fluid dynamics Fishes - Locomotion Engineering design 2021-03 Thesis http://psasir.upm.edu.my/id/eprint/105985/ http://psasir.upm.edu.my/id/eprint/105985/1/INSHA%20AHMED%20TARAY%20-%20IR.pdf text en public masters Universiti Putra Malaysia Computational fluid dynamics Fishes - Locomotion Engineering design Mohd Rafie, Azmin Shakrine
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
advisor	Mohd Rafie, Azmin Shakrine
topic	Computational fluid dynamics Fishes - Locomotion Engineering design
spellingShingle	Computational fluid dynamics Fishes - Locomotion Engineering design Taray, Insha Ahmed A computational fluid dynamics analysis of oscillating bluefin tuna foil propulsion
description	There is an on-going interest in analysing the flow characteristics of swimming fish-like bodies. Bio-inspired aquatic life has inspired some efficient and optimum designs for mankind. The design of both aerial and underwater vehicles has advanced over last few decades and new propulsion methods are being considered to further improve the existing designs. The study of fish locomotion has resulted in some very efficient motions and it has become an interest among scientists to formulate these motions. One such motion is thunniform locomotion (which means to swim like tuna) in which the undulations are confined to the tail (peduncle and caudal-fin) only. Bluefin tuna employs thunniform locomotion and has been associated with a high propulsive efficiency but with less experimental and computational base. Computational fluid dynamic analysis was done using Ansys Fluent for typical range of Strouhal numbers (0.183, 0.281 and 0.413) on a tuna-like body investigating the hydrodynamic forces and flow patterns of the tuna-swimming wake; the time-averaged resultant thrust for above three cases were found to be 0.728 N, 0.803 N and 0.9538. It is seen that higher the value of Strouhal number, more are the shed vortices in the wake. The thunniform motion designed in this study was compared with the existing 3D experimental studies through physical entity of thrust. The vortex shedding was recorded and visualized using curl of velocity and helicity method for vortex core region. The scope of this research has consequences in the design of aircrafts, airships, UAV’s, UUV’s, submarine-launched UAVs, winged vehicles to the jet-propelled take-off and submarines.
format	Thesis
qualification_level	Master's degree
author	Taray, Insha Ahmed
author_facet	Taray, Insha Ahmed
author_sort	Taray, Insha Ahmed
title	A computational fluid dynamics analysis of oscillating bluefin tuna foil propulsion
title_short	A computational fluid dynamics analysis of oscillating bluefin tuna foil propulsion
title_full	A computational fluid dynamics analysis of oscillating bluefin tuna foil propulsion
title_fullStr	A computational fluid dynamics analysis of oscillating bluefin tuna foil propulsion
title_full_unstemmed	A computational fluid dynamics analysis of oscillating bluefin tuna foil propulsion
title_sort	computational fluid dynamics analysis of oscillating bluefin tuna foil propulsion
granting_institution	Universiti Putra Malaysia
publishDate	2021
url	http://psasir.upm.edu.my/id/eprint/105985/1/INSHA%20AHMED%20TARAY%20-%20IR.pdf
_version_	1804888726619291648

A computational fluid dynamics analysis of oscillating bluefin tuna foil propulsion

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