Computational Fluid Dynamics Study of the Hydrodynamic Characteristics of a Torpedo-Shaped Underwater Glider

Le, Thanh-Long; Hong, Thong Duc

doi:10.3390/fluids6070252

Cited by 8 publications

(5 citation statements)

References 37 publications

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“…Based on large eddy simulation and the Ffowcs-Williams and Hawkings equations, Qin et al [32] performed hydrodynamic analysis for a Slocum glider and a blended-wing-body glider, and concluded that blended-wing-body gliders have lower energy cost and low noise performance. Le and Hong [33] used computational fluid dynamics (CFD) methods to acquire the hydrodynamic characteristics of a torpedo-shaped underwater glider, demonstrating the practicality of CFD methods in glider design. To reflect the underwater glider motion more realistically, Wang et al [34] proposed a fluid-multibody coupled analysis method considering the interactions between multibody dynamics and fluid dynamics, enabling a complex dynamic analysis of the underwater glider.…”

Section: Introductionmentioning

confidence: 99%

Development of a Mobile Buoy with Controllable Wings: Design, Dynamics Analysis and Experiments

Wang,

Chen,

Feng

et al. 2024

JMSE

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Marine monitoring equipment such as Argo profiling buoys and underwater gliders are important devices for oceanographic research and marine resource exploration. In this study, a novel mobile buoy capable of vertical profiling motion like Argo profiling buoys and sawtooth gliding motion like underwater gliders is proposed. The proposed mobile buoy can switch between the two motion modes with controllable wings. To verify the feasibility of the proposed mobile buoy, a fluid–multibody coupling model considering multibody dynamics and hydrodynamics was developed to investigate the dynamic response. A scaled-down buoy prototype was fabricated and the feasibility of the two motion modes was experimentally investigated in a laboratory tank. The experimental results agree well with the results of numerical simulation. This work can be helpful for the design and analysis of this kind of mobile buoy.

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Section: Introductionmentioning

confidence: 99%

Development of a Mobile Buoy with Controllable Wings: Design, Dynamics Analysis and Experiments

Wang,

Chen,

Feng

et al. 2024

JMSE

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“…Computer fluid dynamic (CFD) simulation is one of the most common ways to obtain hydrodynamic parameters of underwater * Corresponding author. E-mail address: hchoi@kmou.ac.kr equipment easily and quickly in the research process of underwater equipment [8][9][10][11][12]. Nguyen et al [13] have proposed a robust adaptive control algorithm for the hybrid underwater glider (HUG).…”

Section: Introductionmentioning

confidence: 99%

Simulation Study on a New Hybrid Autonomous Underwater Vehicle with Elevators

Jiafeng Huang,

Hyeung-Sik Choi,

Dong-Wook Jung

et al. 2023

Proc. eng. technol. innov.

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This study aims to design a new hybrid twin autonomous underwater vehicle (HTAUV) consisting of dual cylinder hulls and analyze its pitching motion. The kinematic model for the HTAUV is established, followed by the execution of hydrodynamic simulation CFD of the HTAUV using Ansys Fluent. These simulations are conducted to obtain the hydrodynamic force equation of the HTAUV, which relates to the deflection angle of the elevator. Through the motion simulation of the HTAUV, under the same net buoyancy condition, notable differences emerge when the elevator is deflected. Specifically, parameters such as gliding speed, gliding angle, and pitch angle of the HTAUV are larger when the elevator is deflected, as compared to cases where no deflection is applied.

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“…Computational fluid dynamics (CFD) is known as an important technology for the study of the hydro-aerodynamic characteristics of fluid motion, and has been applied to a microchannel, sterilization chamber, torpedo-shaped underwater glider, centrifugal blower, an infection isolation room, etc. [7][8][9][10][11][12][13][14]. Le et al [7][8][9][10] investigated the thermocapillary migration of the fluid flows in a microchannel.…”

Section: Introductionmentioning

confidence: 99%

Numerical Computation of Hydrodynamic Characteristics of an Automated Hand-Washing System

Le,

Vuong,

Phung

2023

Computation

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The aim of this study is to develop a physical model and investigate the bactericidal effect of an automated hand-washing system through numerical computation, which is essential in areas affected by COVID-19 to ensure safety and limit the spread of the pandemic. The computational fluid dynamics approach is used to study the movement of the solution inside the hand-washing chamber. The finite element method with the k-ε model is applied to solve the incompressible Navier–Stokes equations. The numerical results provide insights into the solution’s hydrodynamic values, streamlines, and density in the two cases of with a hand and without a hand. The pressure and mean velocity of the fluid in the hand-washing chamber increases when the inlet flow rates increase. When the hand-washing chamber operates, it creates whirlpools around the hands, which remove bacteria. In addition, the liquid inlet flow affects the pressure in the hand-washing chamber. The ability to predict the hydraulic and cleaning performance efficiencies of the hand-washing chamber is crucial for evaluating its operability and improving its design in the future.

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Computational Fluid Dynamics Study of the Hydrodynamic Characteristics of a Torpedo-Shaped Underwater Glider

Cited by 8 publications

References 37 publications

Development of a Mobile Buoy with Controllable Wings: Design, Dynamics Analysis and Experiments

Development of a Mobile Buoy with Controllable Wings: Design, Dynamics Analysis and Experiments

Simulation Study on a New Hybrid Autonomous Underwater Vehicle with Elevators

Numerical Computation of Hydrodynamic Characteristics of an Automated Hand-Washing System

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