Numerical Simulation of Submarine Surfacing Motion in Regular Waves

Zhang, Zhiguo; Guo, Lixiang; Peng, Wei; Wang, Xianzhou; Feng, Dan

doi:10.1007/s40997-018-0259-5

Cited by 14 publications

(3 citation statements)

References 14 publications

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“…When oscillating on the water surface, the deck of the submarine that rises in the beam sea is always above the water surface, similar to when the submarine rises in static water, as shown in Figure 7. The beam sea has a slight effect on pitch prior to the submarine sail reaching the water surface, which is consistent with the study of Zhang et al [28]. When the submarine rises in static water, the pitching oscillation decays rapidly and the pitch angle is always below 1 • after 12.3 s. When the submarine rises in the beam sea, the pitching oscillation on the water surface does not decay rapidly, and the pitch angle oscillates between −5 • and 5 • .…”

Section: Effect Of Beam Seasupporting

confidence: 92%

Effect of Waves on the Behavior of Emergent Buoyantly Rising Submarines Using CFD

Chen

Zhang

et al. 2020

Applied Sciences

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Emergent buoyantly rising submarines encounter excess roll problems, partially owing to waves that significantly affect their behavior. This study predicts the behavior of a submarine, including when it rises in static water, beam sea, head wave, following wave, 30∘ bow wave, 60∘ bow wave, 30∘ quartering wave, and 60∘ quartering wave, using the computational fluid dynamics method. The beam sea has a slight effect on pitch prior to the submarine rising to the water surface, but the maximum roll angle in the beam sea is 4.43 times that in static water. After a submarine submerges in water, the pitching oscillation does not decay quickly owing to the yaw angle. The head wave and the following wave have a continuous significant effect on the pitch; the submarine sail remains under the water surface after it submerges from the highest position. The head wave and the following wave have a slight effect on the roll and yaw before the submarine rises to the water surface; however, the roll angle suddenly increases after the submarine submerges from the highest position. As the initial angle between the submarine centerline and wave direction increases, the effect of waves on the longitudinal motion decreases. The amplitude of the pitching oscillation decreases with an increase in the initial angle between the submarine centerline and wave direction, and the waterline when the submarine oscillates on the water surface decreases. The difference in the maximum roll angle between when a submarine rises in an oblique wave and when it rises in beam sea is below 6.3∘. Submarines should try to avoid rising in a head wave and the following wave.

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Section: Effect Of Beam Seasupporting

confidence: 92%

Effect of Waves on the Behavior of Emergent Buoyantly Rising Submarines Using CFD

Chen

Zhang

et al. 2020

Applied Sciences

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“…The donors of interpolation points are found using ADT (an alternative digital tree), while the relationship between the donor points and interpolation points is obtained by the trilinear interpolation method [26]. Reference [27] shows more details about the dynamic overset grid technology we used. Figure 6 shows the surface grid of the ship, and Figure 7 shows the comparison of the grid before and after the overset.…”

Section: Computational Domain and Boundary Conditionsmentioning

confidence: 99%

CFD Simulation and Experimental Study on Coupled Motion Response of Ship with Tank in Beam Waves

Feng

Liu

et al. 2022

JMSE

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Tank sloshing is widely present in many engineering fields, especially in the field of marine. Due to the trend of large-scale liquid cargo ships, it is of great significance to study the coupled motion response of ships with tanks in beam waves. In this study, the CFD (Computational Fluid Dynamics) method and experiments are used to study the response of a ship with/without a tank in beam waves. All the computations are performed by an in-house CFD solver, which is used to solve RANS (Reynold Average Navier-Stokes) equations coupled with six degrees-of-freedom solid-body motion equations. The Level Set Method is used to solve the free surface. Verification work on the grid number and time step size has been conducted. The simulation results agree with the experimental results well, which shows that the numerical method is accurate enough. In this paper, several different working conditions are set up, and the effects of the liquid height in the tank, the size of the tank and the wavelength ratio of the incident wave on the ship’s motion are studied. The results show the effect of tank sloshing on the ship’s motion in different working conditions.

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“…Their paper discusses the challenges of turbulence modelling in accurately simulating these flow patterns and compares computational results with experimental measurements, shedding light on the vital role of turbulence modelling in marine flow simulations. In a study by Zhang et al [11], the unsteady Reynolds-averaged Navier-Stokes (URANS) method was employed to simulate the surfacing motion of a submarine model (DARPA-SUBOFF) in regular waves. The outcomes showed that in the proximity of the free surface, underwater roll and pitch instability occur.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Numerical Captive Model Tests for Underwater Vehicles: The DARPA SUB-OFF Test Case

Zheku,

Villa,

Piaggio

et al. 2023

JMSE

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During the early design stage of an underwater vehicle, the correct assessment of its manoeuvrability is a crucial task. Conducting experimental tests still has high costs, especially when dealing with small vehicles characterized by low available budget. In the current investigation, virtual towing tank tests are simulated using the open-source OpenFOAM library in order to assess the reliability of CFD methods for the prediction of hydrodynamic forces and moments. A well-known case study, the Defence Advanced Research Projects Agency (DARPA) SUB-OFF model, is used, and the outcomes are compared to the experimental results available in the literature. Five different configurations are investigated for pure drift tests, rudder tests and pure rotation in both vertical and horizontal plane. The results show an overall good agreement with the experimental data with a quite low demanding mesh arrangement of 3M cells, a favourable balance between accuracy and computational time. In more detail, the expected error in the most significant forces during manoeuvres is less than 2% for the fully appended configuration (the submarine real operative condition), whereas the accuracy is moderately reduced for the barehull configuration (a case not representative of a real hull) with an expected error of 15%. A possible reason for the differences observed could be attributed to the description of the two streamwise vortices generated when manoeuvring. Apart from the lateral force and yaw moment, the results of the longitudinal force are also presented, having a greater disparity when compared to the experimental data. Nevertheless, the longitudinal force has no important role for the purpose of making stability and control predictions. The study contributes to the validation and consolidation of CFD methods, offering insights into their accuracy and limitations for practical applications in underwater vehicles.

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Numerical Simulation of Submarine Surfacing Motion in Regular Waves

Cited by 14 publications

References 14 publications

Effect of Waves on the Behavior of Emergent Buoyantly Rising Submarines Using CFD

Effect of Waves on the Behavior of Emergent Buoyantly Rising Submarines Using CFD

CFD Simulation and Experimental Study on Coupled Motion Response of Ship with Tank in Beam Waves

Assessment of Numerical Captive Model Tests for Underwater Vehicles: The DARPA SUB-OFF Test Case

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