CFD Investigation of Trout-Like Configuration Holding Station near an Obstruction

Kamran Fouladi,David J Coughlin

doi:10.3390/fluids6060204

Kamran Fouladi, David J Coughlin

Open Access

https://doi.org/10.3390/fluids6060204

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Journal: Fluids	Publication Date: Jun 1, 2021
Citations: 3	License type: CC BY 4.0

Affiliation: Widener University

Abstract

This report presents the development of a fluid-structure interaction model using commercial Computational fluid dynamics software and in-house developed User Defined Function to simulate the motion of a trout Department of Mechanical Engineering, Widener University holding station in a moving water stream. The oscillation model used in this study is based on the observations of trout swimming in a respirometry tank in a laboratory experiment. The numerical simulations showed results that are consistent with laboratory observations of a trout holding station in the tank without obstruction and trout entrained to the side of the cylindrical obstruction. This paper will be helpful in the development of numerical models for the hydrodynamic analysis of bioinspired unmanned underwater vehicle systems.

Highlights

Unmanned underwater vehicle (UUV) systems play a crucial role in remote Intelligence, Surveillance, and Reconnaissance (ISR) missions in marine environments
The CFD simulations of the trout-like configuration (TLC) in the above scenarios are presented
This paper reported on the use of a CFD model to simulate and understand the motion of a sub-carangiform swimmer holding station in a moving water stream with and without an obstruction

Summary

Introduction

Unmanned underwater vehicle (UUV) systems play a crucial role in remote Intelligence, Surveillance, and Reconnaissance (ISR) missions in marine environments. These systems are touted or have already been deployed for various critical missions, such as port protection surveillance, deep ocean exploration, seabed surveying, mine countermeasures, and underwater structure inspection [1,2,3,4]. Many earlier UUVs have been designed with rigid bodies and driven using propellers [6] These systems use rigid control surfaces for maneuvering. Fishes are remarkable in their ability to control and maneuver using flexible bodies and fins [6] They achieve high propulsive efficiency and excellent maneuverability through the coordinated motion of the body, fins, and tail [7]

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Results

Conclusion