Numerical investigation of a wave glider in head seas

Yang, Fuming; Shi, Weichao; Zhou, Xu; Guo, Bin; Wang, Dazheng

doi:10.1016/j.oceaneng.2018.06.017

Cited by 37 publications

(11 citation statements)

References 9 publications

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“…The wave glider model ( Fig.1) used in this paper is the same as previous studies developed by China National Marine Technology Center (Yang et al (2018)). Six tandem hinged flat hydrofoils are arranged in a straight line.…”

Section: Brief Description Of the Investigated Wave Glidermentioning

confidence: 99%

“…Prior to conducting a detailed simulation, the grid independence tests of 2D and 3D oscillating tandem hydrofoils cases has been done in our previous work (Yang et al (2018)). Comparisons with existing experimental and computational results cover the predictions of time-mean thrust coefficients and timeindependent thrust coefficients.…”

Section: Validation and Sensitivity Studymentioning

confidence: 99%

“…In previous study (Yang et al (2018)), we identified the propulsive performance of each hydrofoil in the six tandem hydrofoils based on sea state 2 (H=0.17m, T=2s). However, the thrust of the second hydrofoil was found to be negative.…”

Section: Parametric Study On Propulsion Performance Of Tandem Hydrofoilsmentioning

confidence: 99%

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Systematic study on propulsive performance of tandem hydrofoils for a wave glider

2019

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Section: Brief Description Of the Investigated Wave Glidermentioning

confidence: 99%

Section: Validation and Sensitivity Studymentioning

confidence: 99%

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Systematic study on propulsive performance of tandem hydrofoils for a wave glider

2019

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“…Overset mesh functionality has been included in some of the commercial software, e.g. Star-CCM+ (Yang et al, 2018). However, it was not available in many of the major open-source toolboxes for a long time, which limited its usage by the researchers in the community.…”

Section: Introductionmentioning

confidence: 99%

Application of an overset mesh based numerical wave tank for modelling realistic free-surface hydrodynamic problems

Chen

Qian

et al. 2019

Ocean Engineering

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“…Tian et al [21] applied the D-H approach and Lagrangian mechanics to simulate the performance of the wave glider’s motion. Yang et al [22] presented an unsteady Reynolds averaged Navier-Stokes numerical simulation to predict the wave glider’s dynamic performance in head seas. They noted that the surge force acting on the surface boat and the passive eccentric rotation law of the hydrofoils were the main factors affecting the propulsion efficiency of the wave glider.…”

Section: Introductionmentioning

confidence: 99%

Effects of non-sinusoidal pitching motion on the propulsion performance of an oscillating foil

Zhai

et al. 2019

PLoS ONE

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Numerical simulations have been used in this paper to study the propulsion device of a wave glider based on an oscillating hydrofoil, in which the profile of the pitching and heaving motion have been prescribed for the sake of simplicity. A grid model for a two-dimensional NACA0012 hydrofoil was built by using the dynamic and moving mesh technology of the Computational Fluid Dynamics (CFD) software FLUENT and the corresponding mathematical model has also been established. First, for the sinusoidal pitching, the effects of the pitching amplitude and the reduced frequency were investigated. As the reduced frequency increased, both the mean output power coefficient and the optimal pitching amplitude increased. Then non-sinusoidal pitching was studied, with a gradual change from a sinusoid to a square wave as the value of β was increased from 1. It was found that when the pitching amplitude was small, the trapezoidal pitching profile could indeed improve the mean output power coefficient of the flapping foil. However, when the pitching amplitude was larger than the optimal value, the non-sinusoidal pitching motion negatively contributed to the propulsion performance. Finally, the overall results suggested that a trapezoidal-like pitching profile was effective for the oscillating foil of a wave glider when the pitching amplitude was less than the optimal value.

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Numerical investigation of a wave glider in head seas

Cited by 37 publications

References 9 publications

Systematic study on propulsive performance of tandem hydrofoils for a wave glider

Systematic study on propulsive performance of tandem hydrofoils for a wave glider

Application of an overset mesh based numerical wave tank for modelling realistic free-surface hydrodynamic problems

Effects of non-sinusoidal pitching motion on the propulsion performance of an oscillating foil

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