Calculation of Manoeuvring Forces on Submarines Using Two Viscous-Flow Solvers

Vaz, Guilherme; Toxopeus, Serge; Holmes, Samuel

doi:10.1115/omae2010-20373

Cited by 33 publications

(23 citation statements)

References 16 publications

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“…Our application of CFD was relatively superficial compared to other studies that have used CFD to numerically model the flow around AUVs and particularly for investigating its wake (Falcao de Campos, 1983;Tyagi and Sen, 2006;Phillips et al, 2007;de Barros et al, 2008;Wu, 2010;Vaz et al, 2010). The authors thank an anonymous reviewer for providing these references.…”

Section: Numerical Modellingmentioning

confidence: 95%

Predicting the wake behind a large AUV hydrofoil

Allston

Munroe

Lewis

et al. 2014

Methods in Oceanography

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Section: Numerical Modellingmentioning

confidence: 95%

Predicting the wake behind a large AUV hydrofoil

Allston

Munroe

Lewis

et al. 2014

Methods in Oceanography

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“…These values are then compared with respect to the theory; see the works by the authors of [14,15]. Validation of the model can also be carried out with respect to simulations using Computational Fluid Dynamic (CFD) simulation software [16,17], which requires a correct simulation configuration [18]. Another way to use the PMM for identification is by turning on the robot’s actuators and finding the relationship between the energy input and the force and torque in the output generated by the robot [19].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Computational Methodology for the Determination of Hydrodynamic Coefficients Based on Free Decay Test: Application to Conception and Control of Underwater Robots

Cely

Saltarén

Portilla

et al. 2019

Sensors

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Hydrodynamic coefficients are essential for the development of underwater robots; in particular, for their design and navigation control. To obtain these coefficients, several techniques exist. These methods are usually experimental, but, more recently, some have been designed by a combination of experiments with computational methods based on Computational Fluid Dynamics (CFD). One method for obtaining the hydrodynamic coefficients of an ROV (Remote Operated Vehicle) is by using an experimental PMM (Planar Motion Mechanism) or CWC (Circular Water Channel); however, the use of these experimental infrastructures is costly. Therefore, it is of interest to obtain these coefficients in other ways, for example, by the use of simple experiments. The Free Decay Test is an ideal type of experiment, as it has a low cost and is simple to implement. In this paper, two different free decay tests were carried out, to which three different methods for obtaining coefficients were applied. They were compared with results obtained by CFD simulation to conduct a statistical analysis in order to determine their behaviours. It was possible to obtain values of the drag and added mass coefficients for the models analysed, where the values were obtained for an Underwater Drone Robot (UDrobot).

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“…For larger Reynolds number environment (laminar flow), the seawater would be removed from the submarine' surface and form complex vortex street, which will cause large fluid dynamics fluctuation. Previous researchers [3] [4] have done a lot of researches on underwater vehicles. They found that the yawing, pitching and rolling three disturbance trends of movement would be caused by the moments vehicles suffering, which could inevitably increase the angle tracking error of the submarine tracking-pointing device.…”

Section: Introductionmentioning

confidence: 99%

The Numerical Investigation of Optical Error Compensation for Dynamic Target by FSM in Photoelectric Mast

Liu

Wang

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract:In this paper, firstly, based on the basic control equations of fluid mechanics, the effects of the fluid on force and vortex induced vibration around underwater submarine model are studied and discussed, employing the finite volume method by hierarchy grids. Secondly, the structural characteristics, transfer functions and control strategies of Steering Mirror Fast (FSM) are analyzed and obtained. The disturbance of moment also has been resolved to optical axis coordinate system. Finally, take the optical model of submarine as the research background, the effects of the FSM on the stability improvement of photoelectric tracking system are discussed. The results show that the disturbance of submarine moments mainly origin from the vortex induced vibration. The dynamic target tracking error could be suppressed. This research explores vortex induced vibration control in optical filter. Therefore, it holds certain scientific significance and practical value. IntroductionThe photoelectric mast offers several applications on target searching, laser ranging, laser communication, laser weapon as well as optical tracking[1] [2]. For the submarine, the photoelectric and optical tracking system required to be installed into the long photoelectric masts. However, when submarines carrying long mast and traveling at high speed under water, several unnegligible disturbances would be generated, due to the interaction of the seawater. For larger Reynolds number environment (laminar flow), the seawater would be removed from the submarine' surface and form complex vortex street, which will cause large fluid dynamics fluctuation. Previous researchers [3][4] have done a lot of researches on underwater vehicles. They found that the yawing, pitching and rolling three disturbance trends of movement would be caused by the moments vehicles suffering, which could inevitably increase the angle tracking error of the submarine tracking-pointing device. Furthermore, the translational as well as the rotating motion of this submarine is caused by these force or moment. The characters of flow field structure, force and moment could be significant influenced by sailing posture, Reynolds number and so on. These disturbances, finally, would be added to the input noise of tracking and targeting systems in the apparent axis coordinate system. Previously, in the field of fluid mechanics, the studies of submarine flow field and vibration have been widely carried out. Those disturbances usually appear narrow bandwidth and small amplitude. In order to compensate the optical axis error caused by these disturbances, adaptive optics structure is applied on the tracking-pointing servo system. The FSM is an important optical equipment, by control two pairs of piezoelectric ceramics stack one pair push and the other pair pull with certain angles [5][6] the reflected light could be adjusted accurately and fastly.In this paper, firstly, the character of force and fluid field for a submarine model at 6° yaw angle,

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Calculation of Manoeuvring Forces on Submarines Using Two Viscous-Flow Solvers

Cited by 33 publications

References 16 publications

Predicting the wake behind a large AUV hydrofoil

Predicting the wake behind a large AUV hydrofoil

Experimental and Computational Methodology for the Determination of Hydrodynamic Coefficients Based on Free Decay Test: Application to Conception and Control of Underwater Robots

The Numerical Investigation of Optical Error Compensation for Dynamic Target by FSM in Photoelectric Mast

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