Numerical Prediction of Submarine Hydrodynamic Coefficients using CFD Simulation

Pan, Yu-cun; Zhang, Huaixin; Zhou, Qidou

doi:10.1016/s1001-6058(11)60311-9

Cited by 78 publications

(27 citation statements)

References 6 publications

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“…Feldman et al [4][5][6] performed a series of captive model experiments to investigate the stability and control characteristics of submarines, such as straightline towing, rotating arm test etc. Pan et al [7,8] conducted the numerical prediction of submarine hydrodynamic coefficients and rotary derivatives using the Computational Fluid Dynamics (CFD) approach based on the standard equations of motion for submarine maneuvers [9]. In addition, Booth [10] carried out a classical stability analysis of a nonpropelled submarine by introducing nonlinear incidence terms to conventional coefficient modeling.…”

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confidence: 99%

Numerical Simulation Study on the Effects of Course Keeping on the Roll Stability of Submarine Emergency Rising

Zhang

et al. 2019

Applied Sciences

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Featured Application: The results in this research can provide technical support for the rudder control of a real submarine to suppress the excessive roll of emergency rising. The results also laid the foundation for further research of a free-running submarine model. Abstract: A direct numerical simulation method based on Reynolds Average Navier-Stokes (RANS) equations is used to carry out numerical prediction studies of submarine emergency rising in this paper. Firstly, a numerical simulation of the nonpropelled model without rudder manipulating is accomplished as the basis of this study. The numerical prediction results are in good agreement with the experimental data, which proves the feasibility and accuracy of the direct numerical simulation method. Meanwhile, both model tests and numerical simulation results reveal the strong coupling effect between roll and yaw motions during the underwater ascending process. Based on the above observation and analysis, another two numerical simulations, whose grids are identical with the non-manipulation simulation, are conducted respectively under the condition of rudder steering, i.e., course keeping simulation and self-propulsion simulation. An optimized S surface controller based on conditional determination is designed to manipulate the rudders. As a result, the yaw angle of the latter two simulations is limited within the range of 0.2 • and 0.8 • respectively, proving the effectiveness of the S surface controller. Correspondingly, the maximum roll angle is reduced by 96% and 70% respectively, which demonstrates that the roll stability is significantly enhanced by improving the course keeping ability of the model. Moreover, it is also proven from the perspective of reverse verification that, the excessive yaw deviation is the root cause of emergency rising roll instability for the situation of incidence angle lower than 30 • .Appl. Sci. 2019, 9, 3285 2 of 26 surface. Moreover, Watt [3] also showed how important other variables e.g., yaw and roll etc., are to the stability of the ascent motion, henceforth referred to as "rising stability".In the study on emergency rising stability, previous researchers mainly focused on obtaining the hydrodynamic coefficients through physical captive model tests or numerical simulated captive model tests, then combining the 6 degrees of freedom (DOF) motion equations to carry out maneuverability prediction. Feldman et al. [4][5][6] performed a series of captive model experiments to investigate the stability and control characteristics of submarines, such as straightline towing, rotating arm test etc. Pan et al. [7,8] conducted the numerical prediction of submarine hydrodynamic coefficients and rotary derivatives using the Computational Fluid Dynamics (CFD) approach based on the standard equations of motion for submarine maneuvers [9]. In addition, Booth [10] carried out a classical stability analysis of a nonpropelled submarine by introducing nonlinear incidence terms to conventional coefficient modeling. Booth pointed out the latera...

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confidence: 99%

Numerical Simulation Study on the Effects of Course Keeping on the Roll Stability of Submarine Emergency Rising

Zhang

et al. 2019

Applied Sciences

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“…In order to determine the hydrodynamic derivatives through virtual test technology, Mucha and el Moctar (2013) conducted the simulations of PMM tests for KVLCC2 tanker with various distances to a vertical bank. To generate the time-varying computational grids for the (Yang 2011) and tetrahedral grid remeshing (Pan et al 2012) have been used in the past. However, these methods require enough space between the ship and the boundaries of the computational domain for remeshing, thus they are incapable of simulating the motion in confined water.…”

Section: Nowadaysmentioning

confidence: 99%

Numerical Study of Hydrodynamic Derivatives and Course Stability under Ship-Bank Interaction

Liu¹,

Ma²,

Gu³

2018

TransNav

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Since ship-bank interaction affects the manoeuvrability of a ship navigating close to a bank, the determination of hydrodynamic derivatives is of great importance to assess the ship manoeuvrability. To obtain the hydrodynamic derivatives of the KVLCC2 model ship with different water depths and ship-bank distances, the simulation of PMM tests are carried out using an unsteady Reynolds-Averaged Navier-Stokes (RANS) based solver. Hybrid dynamic mesh technique is proposed to realize the simulation of pure yaw tests in confined water. Studies on the grid convergence and time-step-size convergence are firstly performed. Hydrodynamic derivatives for the ship in different water depths and ship-bank distances are compared. The course stability is investigated based on time-domain simulations and eigenvalue analysis, and the results show that the ship-bank interaction and shallow water effect have a remarkable influence on the course stability. http://www.transnav.eu the International Journal on Marine Navigation and Safety of Sea Transportation Volume 12 Number 4

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“…The added mass coefficients were solved by simulating the planar motion mechanism test and a free-decaying test in CFD from the literature. [21][22][23][24] A method of solving the hydrodynamic coefficients of a complex-shaped robot was proposed, and the authenticity of the simulation was verified by an experiment in Tang et al 25 With robot motion near a wall, the hydrodynamic force due to the blocking effect of a wall is called the wall hydrodynamic force. In previous research, there was not much research on the influence of wall effect for robots.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic calculation and analysis of a complex-shaped underwater robot based on computational fluid dynamics and prototype test

Tao

Sun

et al. 2017

Advances in Mechanical Engineering

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In this article, a mathematical model of hydrodynamic force was established to model the influence of wall in realizing the precise control and maneuverability of a complex-shaped underwater robot. A hydrodynamic model of a robot for use in a nuclear reaction pool was presented containing not only hydrodynamics coefficients but also a wall hydrodynamic force term, which was often ignored for robots used at sea. First, hydrodynamic coefficients in the model, including viscous and inertial coefficients, were solved by simulating steady-state and unsteady-state motion by computational fluid dynamics. Next, the wall hydrodynamic force was calculated by computational fluid dynamics for different velocities and distances from the wall, and the scope of influence of the wall was identified. Finally, hydrodynamic coefficients without the wall effect and with the wall hydrodynamic force under different conditions were measured experimentally in a circulating water tank. The result demonstrated the accuracy of hydrodynamic calculation by computational fluid dynamics and verified the reliability of the hydrodynamic mathematical model.

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Numerical Prediction of Submarine Hydrodynamic Coefficients using CFD Simulation

Cited by 78 publications

References 6 publications

Numerical Simulation Study on the Effects of Course Keeping on the Roll Stability of Submarine Emergency Rising

Numerical Simulation Study on the Effects of Course Keeping on the Roll Stability of Submarine Emergency Rising

Numerical Study of Hydrodynamic Derivatives and Course Stability under Ship-Bank Interaction

Hydrodynamic calculation and analysis of a complex-shaped underwater robot based on computational fluid dynamics and prototype test

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