Numerical study on local steady flow effects on hydrodynamic interaction between two parallel ships advancing in waves

Yao, Chi; Dong, Wencai

doi:10.1016/j.enganabound.2016.02.007

Cited by 15 publications

(2 citation statements)

References 25 publications

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“…Intelligent ships, such as replenishment ships, semisubmersible drilling rig, and other special ships, require high precision and good safety operation and usually have multiple thrusters (Liu and Xiao, 2021). However, the hydrodynamic interaction of a thruster in the propulsion process will affect the control of the ship (Yao and Dong, 2016). Apart from this, in the complex marine environment, the propulsion load fluctuates sharply, which makes the power allocation of each thruster unbalanced (Gao et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

A thrust allocation strategy for intelligent ships based on model prediction control

Zhu

Wang

Gao

et al. 2023

Transactions of the Institute of Measurement and Control

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In order to solve the problem of the traditional sequential quadratic programming thrust allocation method, such as limited feasible region and low propulsion efficiency, a thrust allocation strategy based on model predictive control is proposed in this paper. The proposed thrust allocation strategy is realized by rolling optimization of model predictive control, and moreover, considering the possibility of thruster failure, a fault-tolerant thrust allocation strategy is proposed. The simulation results show that the proposed strategy can not only make the ship run in the expected condition but also reduce the average power consumption by 16.3% compared with the traditional sequential quadratic programming method and has good fault tolerance in the face of thruster failure.

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Section: Introductionmentioning

confidence: 99%

A thrust allocation strategy for intelligent ships based on model prediction control

Zhu

Wang

Gao

et al. 2023

Transactions of the Institute of Measurement and Control

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“…To deal with the different forward speeds, they divided the velocity potential into two independent components and addressed each component separately. Yao and Dong [17] developed a frequency domain analysis method with consideration of local steady flow effect to investigate wave forces of two parallel advancing ships. They showed that the flow speed is an important factor relating to the hydrodynamic interaction.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the unsteady hydrodynamic loads of ship passing by bridge piers by a 3-D boundary element method

Yuan

et al. 2018

Engineering Analysis with Boundary Elements

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A 3-D Rankine type Green function boundary element method is developed to estimate the unsteady hydrodynamic interaction during ship passing piers process. To address this moving boundary problem, a free surface re-meshing algorithm based on the combination of local mesh and global mesh is proposed to update fluid boundary and the boundary value formula is solved at each time step. Two alternative numerical models for ship passing piers problem are compared with the current analysis method. Based on the three numerical models, the characteristics of the hydrodynamic loads acting on the passing ship are specified and the critical positions for the peak values have been identified. Simulation results demonstrate that the fluid disturbance induced by the piers is of importance. Therefore, the study of ship-piers hydrodynamic interaction in a river must be handled as a different forward speeds problem. Additionally, the wave elevation effect can only be neglected on condition that the forward speed is very low.

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Numerical Study on Motion Responses of Two Parallel Ships During Underway Replenishment by the Semi-Analytical HOTP Method

Yang

Zhu

et al. 2022

China Ocean Eng

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Numerical study on local steady flow effects on hydrodynamic interaction between two parallel ships advancing in waves

Cited by 15 publications

References 25 publications

A thrust allocation strategy for intelligent ships based on model prediction control

A thrust allocation strategy for intelligent ships based on model prediction control

Investigation on the unsteady hydrodynamic loads of ship passing by bridge piers by a 3-D boundary element method

Numerical Study on Motion Responses of Two Parallel Ships During Underway Replenishment by the Semi-Analytical HOTP Method

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