Numerical study to evaluate the important parameters affecting the hydrodynamic performance of manta ray's in flapping motion

Safari, Hadi; Abbaspour, M.; Darbandi, Masoud

doi:10.1016/j.apor.2021.102559

Cited by 9 publications

(5 citation statements)

References 66 publications

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“…Flying in animals like hawkmoths (Gao et al, 2009; Liu, 2002; Liu et al, 1998; Nakata & Liu, 2012), dragonflies (Dong et al, 2010; C. Li & Dong, 2017; Liang & Sun, 2014; Vargas et al, 2008), large birds (Maeng et al, 2013; Beaumont et al, 2022), and bats (Viswanath et al, 2014) have all been characterized by CFD simulations. Aquatic gliding has been examined extensively with CFD modeling of animals (Marinho et al, 2011; Parson et al, 2011; Safari et al, 2021; Takagi et al, 2010; C. Y. Wu et al, 2021) and bioinspired robots (Zhang, 2014), but published CFD simulations of aerial gliding in wingless animals have been limited to flying snakes (Krishnan et al, 2014) and flying squirrels (X. Li et al, 2016; Zhao et al, 2019). Moreover, CFD remains a powerful yet underused tool for investigating how aerial maneuvers like jumping, falling, parachuting, and gliding, are controlled in wingless animals.…”

Section: Discussionmentioning

confidence: 99%

“…Li & Dong, 2017;Liang & Sun, 2014;Vargas et al, 2008), large birds (Maeng et al, 2013;Beaumont et al, 2022), and bats (Viswanath et al, 2014) have all been characterized by CFD simulations. Aquatic gliding has been examined extensively with CFD modeling of animals (Marinho et al, 2011;Parson et al, 2011;Safari et al, 2021;Takagi et al, 2010;C. Y. Wu et al, 2021) and bioinspired robots (Zhang, 2014), but published CFD simulations of aerial gliding in wingless animals have been limited to flying snakes (Krishnan et al, 2014) and flying squirrels (X.…”

Section: Cfdmentioning

confidence: 99%

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Characterizing lift, drag, and pressure differences across wandering salamanders (Aneides vagrans) with computational fluid dynamics to investigate aerodynamics

Kirk

2023

Journal of Morphology

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Wandering salamanders (Aneides vagrans), known to occupy the crowns of old growth coast redwood trees, have recently been found to decelerate and engage in controlled, nonvertical descent while falling. Closely related, nonarboreal species with seemingly minor morphological differences exhibit far less behavioral control while falling; however, the influence of salamander morphology on aerodynamics remains to be tested. Here, we examine differences in morphology and aerodynamics of two salamander species, A. vagrans and the nonarboreal ensatina salamander (Ensatina eschscholtzii), using a combination of traditional and contemporary techniques. Specifically, we compare morphometrics statistically, then use computational fluid dynamics (CFD) to characterize predicted airflow and pressure over digitally reconstructed models of the salamanders. While similar in body and tail lengths, A. vagrans are more dorsoventrally flattened with longer limbs and greater surface area of the foot relative to body size than the nonarboreal E. eschscholtzii. CFD results show dorsoventral pressure gradients differ between the two digitally reconstructed salamanders resulting in lift coefficients of approximately 0.02 and 0.00, and lift:drag ratios of approximately 0.40 and 0.00 for A. vagrans and E. eschscholtzii, respectively. We conclude that the morphology of A. vagrans is better suited for controlled descent than that of the closely related E. eschscholtzii and highlight the importance of subtle morphological features, such as dorsoventral flatness, foot size, and limb length, for aerial control. That our simulation reports align with real‐world performance data underscores the benefits of CFD for studying the link between morphology and aerodynamics in other taxa.

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Section: Discussionmentioning

confidence: 99%

Section: Cfdmentioning

confidence: 99%

Characterizing lift, drag, and pressure differences across wandering salamanders (Aneides vagrans) with computational fluid dynamics to investigate aerodynamics

Kirk

2023

Journal of Morphology

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Section: Biomimetic Batoid-like Propulsionmentioning

confidence: 99%

“…The model of the manta ray under investigation is depicted in Figure 6, while Figure 7 presents the wake structure, and Figure 8 shows the pressure distribution on the ray's body. Additionally, Menzer et al [118] and Safari et al [119] expanded on the exploration of complex unsteady vortex structures generated by the flapping movements of batoids using numerical simulations. In the context of biomimetic batoid modeling and mechanisms, Lee and Kwon [120] utilized the commercial software package ADINA to simulate the journey distance and speed of a ray, while Rayapureddi and Mitra [121] developed an IBM-FSI algorithm using OpenFOAM to address challenges associated with biologically inspired self-propelled batoid robotic devices in 3D hydrodynamic flow fields.…”

Section: Biomimetic Batoid-like Propulsionmentioning

confidence: 99%

Review of Computational Fluid Dynamics Analysis in Biomimetic Applications for Underwater Vehicles

Zhang,

Wang,

Zhang

2024

Biomimetics

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Biomimetics, which draws inspiration from nature, has emerged as a key approach in the development of underwater vehicles. The integration of this approach with computational fluid dynamics (CFD) has further propelled research in this field. CFD, as an effective tool for dynamic analysis, contributes significantly to understanding and resolving complex fluid dynamic problems in underwater vehicles. Biomimetics seeks to harness innovative inspiration from the biological world. Through the imitation of the structure, behavior, and functions of organisms, biomimetics enables the creation of efficient and unique designs. These designs are aimed at enhancing the speed, reliability, and maneuverability of underwater vehicles, as well as reducing drag and noise. CFD technology, which is capable of precisely predicting and simulating fluid flow behaviors, plays a crucial role in optimizing the structural design of underwater vehicles, thereby significantly enhancing their hydrodynamic and kinematic performances. Combining biomimetics and CFD technology introduces a novel approach to underwater vehicle design and unveils broad prospects for research in natural science and engineering applications. Consequently, this paper aims to review the application of CFD technology in the biomimicry of underwater vehicles, with a primary focus on biomimetic propulsion, biomimetic drag reduction, and biomimetic noise reduction. Additionally, it explores the challenges faced in this field and anticipates future advancements.

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“…Instead of a repetitive and time-consuming process, the proposed spatial captive motion could provide necessary information to determine all required coefficients in only one simulation. Safari et al [26] adopted the CFD tool to numerically simulate the complex unsteady vertical structure of flow due to the manta ray's flapping motion. In [27], hydrodynamic parameters of a mini-AUV were identified via CFD simulations.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation on Hydrodynamic Performance of a Portable AUV

Lin

Fang

Cai

et al. 2021

JMSE

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This paper conducts a numerical investigation on the hydrodynamic performance of a portable autonomous underwater vehicle (AUV). The portable AUV is designed to cruise and perform some tasks autonomously in the underwater world. However, its dynamic performance is strongly affected by hydrodynamic effects. Therefore, it is crucial to investigate the hydrodynamic performance of the portable AUV for its accurate dynamic modeling and control. In this work, based on the designed portable AUV, a comprehensive hydrodynamic performance investigation was conducted by adopting the computational fluid dynamics (CFD) method. Firstly, the mechanical structure of the portable AUV was briefly introduced, and the dynamic model of the AUV, including the hydrodynamic term, was established. Then, the unknown hydrodynamic coefficients in the dynamic model were estimated through the towing experiment and the plane-motion-mechanism (PMM) experiment simulation. In addition, considering that the portable AUV was affected by wave forces when cruising near the water surface, the influence of surface waves on the hydrodynamic performance of the AUV under different wave conditions and submerged depths was analyzed. Finally, the effectiveness of our method was verified by experiments on the standard models, and a physical experiment platform was built in this work to facilitate hydrodynamic performance investigations of some portable small-size AUVs.

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Numerical study to evaluate the important parameters affecting the hydrodynamic performance of manta ray's in flapping motion

Cited by 9 publications

References 66 publications

Characterizing lift, drag, and pressure differences across wandering salamanders (Aneides vagrans) with computational fluid dynamics to investigate aerodynamics

Characterizing lift, drag, and pressure differences across wandering salamanders (Aneides vagrans) with computational fluid dynamics to investigate aerodynamics

Review of Computational Fluid Dynamics Analysis in Biomimetic Applications for Underwater Vehicles

Numerical Investigation on Hydrodynamic Performance of a Portable AUV

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