Winglet effect on hydrodynamic performance and trajectory of a blended-wing-body underwater glider

Lyu, Da; Song, Baowei; Pan, Guang; Yuan, Zhiming; Li, Jian

doi:10.1016/j.oceaneng.2019.106303

Cited by 32 publications

(9 citation statements)

References 19 publications

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“…l vd , l d and l v0 are determined by using b(t a ). Then, we use equation (31) to evaluate the position accuracy that the glider resurfaces.…”

Section: Performance Evaluation Modelmentioning

confidence: 99%

“…The smaller the e, the higher the position accuracy that the glider resurfaces. For equation (31), the introduction of denominator l v0 is to avoid that the glider voyage range is too small. Besides, we use equation (32) to evaluate the energy utilization rate of the glider.…”

Section: Performance Evaluation Modelmentioning

confidence: 99%

“…Petritoli et al 29,30 designed the high accuracy control and navigation systems, based on the dynamic model of underwater glider. Lyu et al 31 analyzed the effect of winglet on the hydrodynamic performance and motion trajectory of a blended-wing-body underwater glider. Su et al 32 studied a method to control the glider attitude in currents, combining reinforcement learning with active disturbance rejection control.…”

Section: Introductionmentioning

confidence: 99%

“…Lyu et al. 31 analyzed the effect of winglet on the hydrodynamic performance and motion trajectory of a blended-wing-body underwater glider. Su et al.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Multi-objective optimization for control parameters of underwater gliders considering effect of uncertain input errors

Niu

Wang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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In actual application, the energy utilization rate of underwater glider directly affects the total voyage range. When underwater glider is used for executing exploration mission for a fixed point, the position that the glider resurfaces should be accurate enough. In this paper, we employ a multi-objective optimization method to determine the control parameters values that can maximize the position accuracy that the glider resurfaces and the energy utilization rate simultaneously. Especially, the optimization of this paper considers the effect of uncertain input errors. The control parameters include the net buoyancy adjustment amount and the movable mass block translation amount. The input errors include the control parameters errors, the motion depth error and the current. Based on the dynamic model of an underwater glider, we propose the calculation model and evaluation flow that are used for analyzing the glider position accuracy and energy utilization rate, considering the effect of uncertain input errors. Besides, a combinatorial experimental design method is proposed to calculate the performance evaluation parameters under different control parameters values. Then the radial basis function neural network is employed to establish the surrogate models of performance evaluation parameters to participate in the optimization calculation, which can improve the optimization efficiency. After optimization calculation based on the non-dominated sorting genetic algorithm II, we obtain a Pareto optimal set consisting of 257 sets of non-dominated solutions. Finally, the selection rule of optimal control parameters values is given, and the optimization results are validated under 3 sets of solutions. This research may be valuable for the improvement of the glider work quality.

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“…l vd , l d and l v0 are determined by using b(t a ). Then, we use equation (31) to evaluate the position accuracy that the glider resurfaces.…”

Section: Performance Evaluation Modelmentioning

confidence: 99%

Section: Performance Evaluation Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Lyu et al. 31 analyzed the effect of winglet on the hydrodynamic performance and motion trajectory of a blended-wing-body underwater glider. Su et al.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Multi-objective optimization for control parameters of underwater gliders considering effect of uncertain input errors

Niu

Wang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…Furthermore, the influence of NACA airfoil shape on the gliding economy and stability of UG was analyzed using hydrodynamic method [10]. Studies have also applied hydrodynamic calculation techniques based on CFD to estimate the hydrodynamic parameters of the underwater vehicle [11][12][13]. The effect of wing layout on the motion efficiency and stability of the hybrid underwater glider were investigated by experimental design and computational fluid dynamics methods [14].…”

Section: Introductionmentioning

confidence: 99%

Study on Position and Shape Effect of the Wings on Motion of Underwater Gliders

Huang

Choi

et al. 2022

JMSE

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A typical structure of an underwater glider (UG) includes a pair of fixed wings, and the hydrodynamic force driving the glider forward as descending or ascending in the water is generated primarily by the fixed wings. In this paper, a simplified glider motion model was established to analyze the dynamics in an easier way, and whose simulation results do not differ from the original one. Also, in the paper, the effects of the wing position and wing shape on the UG to the motion were studied. Since no direct analytic approach cannot be performed, the case study of the effects of six different wing positions and three wing shapes on gliding performances which are gliding speed, gliding angle and gliding path were performed through computer simulation. The simulation results revealed that when the fixed wing is located far from the buoyancy center to the tail end, more traveling range is achieved with less energy. Also, effect of the shape difference of the wings were analyzed. Shape changes did not show much difference on the travelling performance of the UG. In addition to these, the transient mode of the UG was studied. To control this, the PID controller for the position of the mass shifter and piston were applied. By application of the PID controller to the linearized dynamics equations, it was shown that the transient behavior of the UG was quickly and steadily controlled.

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An optimization method for control parameters of underwater gliders considering energy consumption and motion accuracy

Niu

Wang

et al. 2021

Applied Mathematical Modelling

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Winglet effect on hydrodynamic performance and trajectory of a blended-wing-body underwater glider

Cited by 32 publications

References 19 publications

Multi-objective optimization for control parameters of underwater gliders considering effect of uncertain input errors

Multi-objective optimization for control parameters of underwater gliders considering effect of uncertain input errors

Study on Position and Shape Effect of the Wings on Motion of Underwater Gliders

An optimization method for control parameters of underwater gliders considering energy consumption and motion accuracy

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