Using reduced hydrodynamic models to accelerate the predictor–corrector convergence of implicit 6-DOF URANS submarine manoeuvring simulations

Bettle, Mark; Gerber, A. G.; Watt, George D.

doi:10.1016/j.compfluid.2014.02.023

Cited by 20 publications

(9 citation statements)

References 22 publications

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“…Aerofoils Used References Aerofoils Used [14] NACA 4412 [43] NACA 0015, and NACA 0020 [20] NACA 0015 [44] NACA 0022 [21] NACA 2408 [45] NACA 2414 [22] NACA 0015 [46] NACA 0020 to NACA 0010 [47] NACA 0012, NACA 0014, NACA 0016, NACA 0022, NACA 0008…”

Section: Referencesmentioning

confidence: 99%

Design and Computational Analyses of Nature Inspired Unmanned Amphibious Vehicle for Deep Sea Mining

Raja¹,

Solaiappan²,

Kumar³

et al. 2022

Minerals

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This paper presents the design calculations, implementations, and multi-engineering based computational constructions of an unmanned amphibious vehicle (UAmV) which efficiently travels underwater to detect and collect deep-sea minerals for investigations, as well as creative usage purposes. The UAmV is expected to operate at a 300 m depth from the water surface. The UAmV is deployed above the water surface near to the approximate target location and swims underwater, checking the presence of various mining, then extracts them using a unique mechanism and stores them in an inimitable fuselage location. Since this proposed UAmV survives in deep-sea regions, the design construction of this UAmV is inspired by hydrodynamic efficient design-based fish, i.e., Rhinaancylostoma. Additionally, standard analytical approaches are followed and, subsequently, the inimitable components such as wing, stabilizers, propellers, and mining storage focused fuselage are calculated. The computational analyses such as hydrodynamic investigations and vibrational investigations were carried out with the help of ANSYS Workbench. The hydrodynamic pressures at various deployment regions were estimated and thereafter the vibrational outcomes of UAmVs were captured for various lightweight materials. The computed outcomes were imposed in the analytical approach and thereby the electrical energy generations by the UAmV’s components were calculated. Finally, the hydrodynamic efficient design and best material were picked, which provided a path to further works on the execution of the focused mission. Based on the low drag generating design profile and high electrical energy induction factors, the optimizations were executed on this work, and thus the needful, as well as suitable UAmV, was finalized for targeted real-time applications.

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Section: Referencesmentioning

confidence: 99%

Design and Computational Analyses of Nature Inspired Unmanned Amphibious Vehicle for Deep Sea Mining

Raja¹,

Solaiappan²,

Kumar³

et al. 2022

Minerals

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“…The 6 DOF URANS simulations are coupled with a predictor-corrector approach that models emergency risers and horizontal zigzags. Due to relief parameter stability restrictions in fixed-point iteration, increasing the time step size is inefficient [25]. Here is a biomimetic robot jellyfish that looks and behaves like the real thing.…”

Section: Literature Surveymentioning

confidence: 99%

“…Additionally, the standby batteries are also equipped in this unmanned system. The standard analytical formulae to design the UAV's propellers are listed in Equations ( 23)- (25), in which pitch angle and chord length of the propellers are dealt. With the help of Equations ( 23)- (25), the design parameters of the UAV's propeller are designed, and the design data are listed in Table 8 [13,16,23,47,[53][54][55][56][57].…”

Section: Estimation Of Pitch Angle and Chord Of The Propellermentioning

confidence: 99%

Nature-Inspired Design and Advanced Multi-Computational Investigations on the Mission Profile of a Highly Manoeuvrable Unmanned Amphibious Vehicle for Ravage Removals in Various Oceanic Environments

Raja¹,

Madasamy²,

Rajendran

et al. 2022

JMSE

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Recent large-scale operations, including frequent maritime transportation and unauthorised as well as unlawful collisions of drainage wastes, have polluted the ocean’s ecology. Due to the ocean’s unsuitable ecology, the entire globe may experience drastic aberrant conditions, which will force illness onto all living things. Therefore, an advanced system is very necessary to remove the undesired waste from the ocean’s surface and interior. Through the use of progressive unmanned amphibious vehicles (UAV), this study provides a dynamic operational mode-based solution to damage removal. In order to successfully handle the heavy payloads of ravage collections when the UAV reveals centre of gravity concerns, a highly manoeuvrable-based design inspired by nature has been imposed. The ideal creatures to serve as the inspiration for this piece are tropical birds, which have a long tail for navigating tricky situations. The design initialization was carried out by focusing on the outer body of tropical birds. Following this, special calculations were conducted and the full design parameters of the UAV were established. This study proposes a unique mathematical formulation for the development of primary and secondary design parameters of an UAV. The proposed mission profile of this application is computationally tested with the aid of sophisticated computational methodologies after the modelling of this UAV. The computational methods that are required are one-way coupling-based hydro-structural interaction assessments and computational hydrodynamic analyses. Computing is used to determine the aerodynamic and hydrodynamic forces over the UAV, the lightweight materials to withstand high fluid dynamic loads, and the buoyancy forces to complete the UAV components. These computational methods have been used to produce a flexible and fine-tuned UAV design for targeted real-time applications.

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“…In this study, a further exploration of research work in the literature [11], a hydrodynamic analysis of the axis-symmetric, disk-type AUH's spinning behavior was studied in order to better perform complex tasks under an ocean current. This research provides an important reference on the interdependent relationship between the effective spinning speed of the AUH mounted with propellers subjected to controlled propeller revolution, the AUH speed, battery capacity, and the range of the ocean current using the viscous computational fluid dynamics (CFD) simulation technique of the ANSYS-CFX solver [16][17][18]. A high-rotating-speed propeller model mounted with three blades was implemented using the ANSYS-CFX RANS (Reynolds-averaged Navier-Stokes equations) solver for simulating open water tests to predict the hydrodynamic performance, including the non-dimensionless propeller thrust, torque, and efficiency variation versus the advance ratio.…”

Section: Introductionmentioning

confidence: 99%

Computational Fluid Dynamics Study of Magnus Force on an Axis-Symmetric, Disk-Type AUV with Symmetric Propulsion

Chen

Yong

2019

Symmetry

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In this paper, the Magnus force induced by a disk-type, spinnable autonomous underwater vehicle (AUV), i.e., autonomous underwater helicopter (AUH), was predicted to promote the spinning AUH moving away from a deep-sea region with temporary and shockable ocean current. The simulation technique of the ANSYS-CFX solver based on viscous computational fluid dynamics (CFD) was employed to analyze the hydrodynamic performance of the spinning AUH and its high-speed propellers in uniform flow conditions. The behavior of the spinning AUH in currents can obviously alter the pressure distribution on both sides of the disk-shaped hull form, resulting in a differential pressure force in the horizontal plane, i.e., Magnus force. The simulation results show that this induced force can enable an AUH at 1 knot service speed to successfully move away from a sudden, transient, and/or steady, uniform ocean current region with inflow velocities of 1–2 knots in deep-sea conditions. The Magnus force induced by symmetrically configurated propeller couple force can be more efficient and effective at driving the AUH’s escape from the current spoiler zone than driving the AUH using the two high-revolution propellers directly. A suitable mechanical power energy-saving matching point integrating the AUH and symmetric propulsion was determined to compare the proposed method and two conventional methods for AUH escape from currents. The comparison results prove that the proposed method is effective and efficient. This study provides a significant reference for the interdependent relationship between the effective spinning speed of an AUH, subject to couple force, controlled propeller revolution, AUH speed, and battery capacity, and the range of ocean currents.

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Using reduced hydrodynamic models to accelerate the predictor–corrector convergence of implicit 6-DOF URANS submarine manoeuvring simulations

Cited by 20 publications

References 22 publications

Design and Computational Analyses of Nature Inspired Unmanned Amphibious Vehicle for Deep Sea Mining

Design and Computational Analyses of Nature Inspired Unmanned Amphibious Vehicle for Deep Sea Mining

Nature-Inspired Design and Advanced Multi-Computational Investigations on the Mission Profile of a Highly Manoeuvrable Unmanned Amphibious Vehicle for Ravage Removals in Various Oceanic Environments

Computational Fluid Dynamics Study of Magnus Force on an Axis-Symmetric, Disk-Type AUV with Symmetric Propulsion

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