Hydrodynamics of Biomimetic Marine Propulsion and Trends in Computational Simulations

The present study focuses on summarizing the recent advancements in the field of fish swimming mode research and bionic robotic fish prototypes based on smart materials. It has been widely acknowledged that fish exhibit exceptional swimming efficiency and manoeuvrability compared to conventional underwater vehicles. In the pursuit of developing autonomous underwater vehicles (AUVs), conventional experimental methods often prove to be complex and expensive. Hence, the utilization of computer simulations for hydrodynamic modelling provides a cost-effective and efficient approach for analysing the swimming behaviour of bionic robotic fish. Additionally, computer simulations can provide data that are difficult to obtain through experimental methods. Smart materials, which integrate perception, drive, and control functions, are increasingly being applied to bionic robotic fish research. However, the utilization of smart materials in this field is still an area of ongoing research and several challenges remain unresolved. This study provides an overview of the current state of research on fish swimming modes and the development of hydrodynamic modelling. The application of four distinct types of smart materials in bionic robotic fish is then reviewed, with a focus on analysing the advantages and disadvantages of each material in driving swimming behaviour. In conclusion, the paper highlights the key technical challenges that must be addressed for the practical implementation of bionic robotic fish and provides insights into the potential future directions of this field.

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“… Stress change curve of fish swimming [ 31 ]. ( a ) Time variation of the average total, total, instantaneous, and viscous forces.…”

Section: Figurementioning

confidence: 99%

A Review of Robotic Fish Based on Smart Materials

Zhao

Ding

et al. 2023

Biomimetics

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“…Since this shape is the result of thousands of centuries of evolution, it is reasonable to propose this geometry for VAWT Savonius-type turbines. It is worth mentioning that some of the authors of the present work have previously proposed bioinspired shapes to be applied in engineering mechanisms with successful results [27][28][29][30]. The Fibonacci spiral is composed of quarter circumferences.…”

Section: Tsr =mentioning

confidence: 99%

Optimization of a Nature-Inspired Shape for a Vertical Axis Wind Turbine through a Numerical Model and an Artificial Neural Network

et al. 2022

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The present work proposes an artificial neural network (ANN) to analyze vertical axis wind turbines of the Savonius type. These turbines are appropriate for low wind velocities due to their low starting torque. Nevertheless, their efficiency is too low. In order to improve the efficiency, several modifications are analyzed. First of all, an innovative blade profile biologically inspired is proposed. After that, the influence of several parameters such as the aspect ratio, overlap, and twist angle was analyzed through a CFD (computational fluid dynamics) model. In order to characterize the most appropriate combination of aspect ratio, overlap, and twist angle, an artificial neural network is proposed. A data set containing 125 data points was obtained through CFD. This data set was used to develop the artificial neural network. Once established, the artificial neural network was employed to analyze 793,881 combinations of different aspect ratios, overlaps, and twist angles. It was found that the maximum power coefficient, 0.3263, corresponds to aspect ratio 7.5, overlap/chord length ratio 0.1125, and twist angle 112°. This corresponds to a 32.4% increment in comparison to the original case analyzed with aspect ratio 1, overlap 0, and twist angle 0.

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“…«Tuberkulu-efektu» horrek bulkada handiagoa ematen dio baleari, eta horrek hegatsak angelu nabarmenagoetan biratzeko aukera ematen dio, eta urarekiko erresistentzia murrizten du, zeina onura garrantzitsua den, hegatsak luzeak baitira (balearen gorputzaren luzeraren ia heren bat). Ezaugarri hori mareen korrontetik (tidal turbines) energia lortzen duten turbinetan erabili da, marea-energia aplikazioetan, muga-geruzaren jaulkipena atzeratu daitekeela frogatuz, baita «drag»/»lift» ratioak handitzea ere korrontearen energia hobeto aprobetxatzeko [15,16], 1. irudian ikus daitekeen bezala.…”

Section: Biomimesiaren Aplikazioak Itsas Energiak Atzemateko Gailuetanunclassified

Aplikazio biomimetikoak itsas energien atzemate-gailuetan

Izquierdo¹,

Vázquez²,

Ilzarbe³

et al. 2021

EKAIA

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Natura inspirazio-iturri gisa aztertzeak itsasotik datorren energiaz baliatzeko makinak diseinatzea eragin du. Dokumentu honek biomimesian oinarrituriko itsas gailuak aztertzen ditu, haien portaeraren ondorioz, energia bereganatzea errazten duten horietan oinarrituz [1]. Azkenik, marrazoen larruazala jariakinaren muga-geruza apurtzea ahalbidetzen duten espikula txikiz osatuta dagoenez, haren mugimenduarekiko erresistentzia murriztuz [2], eta fenomeno honetan oinarrituz, olatuak sortzeko erabiltzen diren olatu kanaletan (waveflumes) energia xahutzeko sistemetan aztertzen den aplikazioa zehaztuko da.

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Hydrodynamics of Biomimetic Marine Propulsion and Trends in Computational Simulations

Cited by 24 publications

References 186 publications

A Review of Robotic Fish Based on Smart Materials

A Review of Robotic Fish Based on Smart Materials

Optimization of a Nature-Inspired Shape for a Vertical Axis Wind Turbine through a Numerical Model and an Artificial Neural Network

Aplikazio biomimetikoak itsas energien atzemate-gailuetan

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