A study on kinematics characteristics of freak wave

Cui, C. Q.; Zhang, Ningchuan; Zuo, Shengpeng; Fang, Zhuo

doi:10.1007/s13344-013-0034-8

Cited by 11 publications

(3 citation statements)

References 10 publications

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“…Xu et al [ 8 ] studied NiCoCrAlY cladding coating on the surface of Ti6A14V titanium alloy and found that the scanning speed was in the range of 300–500 mm min −1 , and the hardness of the cladding layer gradually increased with the increase of the scanning speed. Cui et al [ 9 ] studied the effect of scanning speed on Ni‐based composite coating and found that with the increase of scanning speed, the microstructure grains of the coating were gradually refined, the crack tendency was increased, and the hardness and wear resistance of the cladding layer were increased. Wang et al [ 10 ] prepared Fe 47 Cr 15 Mo 14 Co 3 C 15 B 6 amorphous coating on the surface of H13 steel by laser cladding and found that the hardness and corrosion resistance were greatly improved with the increase of scanning speed.…”

Section: Introductionmentioning

confidence: 99%

Effect of Scanning Speed on Microstructure and Properties of Laser Cladding Fe‐0.3C‐15Cr‐1Ni High Hardness Corrosion‐Resistant Alloy Coating on 3Cr13 Surface

Dong,

Guo,

Zhang

et al. 2024

steel research int.

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Fe‐0.3C‐15Cr‐1Ni high hardness corrosion‐resistant alloy coating is prepared on the surface of 3Cr13 by laser cladding technology. The effects of scanning speeds on the microstructure, microhardness, and corrosion resistance of the coating are studied. The results show that the microstructure of the cladding layer is mainly composed of intracrystalline martensite and carbides distributed along the grain boundaries. When scanning speed increases from 3 to 5 mm s−1, the grain is obviously fined, and the number of carbides increases, further increasing scanning speed, the grain refinement degree decreases and the carbide quantity decreases gradually. When scanning speed is 5 mm s−1, the microhardness reaches the maximum, the corrosion resistance is significantly improved at 5 and 7 mm s−1, and the pitting potential and passivation zone width increase by 180–219% and 69–78%, respectively, compared with 3 mm s−1 sample, but further increases scanning speed to 9 mm s−1, the hardness and corrosion resistance significantly reduce. This is because scanning rate affects the component undercooling degree of the dynamic molten pool and the temperature gradient at the solidification interface front, which affects the growth of dendrites, the number of carbides, and further affects the alloying elements in the carbide and matrix.

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Section: Introductionmentioning

confidence: 99%

Effect of Scanning Speed on Microstructure and Properties of Laser Cladding Fe‐0.3C‐15Cr‐1Ni High Hardness Corrosion‐Resistant Alloy Coating on 3Cr13 Surface

Dong,

Guo,

Zhang

et al. 2024

steel research int.

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“…Then, the wave-making signal was substituted into a fully nonlinear numerical flume to calculate the water particle velocity distribution of the wave peak. Cui et al [23] utilized the VOF method to capture the free surface and performed a numerical simulation on the velocity field of the generalized freak wave. It was found that the horizontal velocity of the water particles of a Freak wave was higher than that of the 5th order Stokes wave peak.…”

Section: Introductionmentioning

confidence: 99%

The Effects on Water Particle Velocity of Wave Peaks Induced by Nonlinearity under Different Time Scales

Tao

Xie

et al. 2021

JMSE

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The water particle velocity of the wave peaks is closely related to the wave load borne by offshore structures. It is of great value for marine disaster prevention to study the water particle velocity of nonlinear extreme waves represented by Freak waves. This study applies the High-order Spectral Method (HOS) numerical model to analyze the characteristics and influencing factors of the water particle velocity of Freak wave peak with two different generation mechanisms under the initial condition of a weakly modulated Stokes wave train. Our results show that the water particle velocity of the wave peak increases linearly with wave height and initial wave steepness in the evolution stage of modulation instability. While in the later stage, the relationship becomes exponential. Under the condition of similar wave heights, the deformation degrees of Freak waves with different generation mechanisms are distinct, the deformation degree of modulation instability stage is smaller than that of the later stage. The water particle velocity of the wave peaks increases with the deformation degrees. Furthermore, the correlation between wave peak height and water particle velocity is a quadratic function. This provides a theoretical basis for further understanding of nonlinear waves and the prediction of marine disasters.

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“…In some studies, generating simulated freak waves in laboratory and numerical flume taking into account nonlinearity interaction between component waves have been documented [7][8][9][10][11][12][13][14][15][16][17][18]. Tao [14] and Yang [15] conducted a long time physical modeling for multi-directional irregular wave train, and analyzed the effects of directional spreading parameters on probability distributions and groupiness of freak waves, respectively.…”

Section: Introductionmentioning

confidence: 99%

Study on Numerical Simulation of Three-dimensional Multi-directional Freak Waves Based on OpenFOAM

Cui¹,

Yan²,

Zuo³

2019

dteees

Self Cite

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A three-dimensional numerical model was built by developing the standard solver interFoam in the open source CFD toolbox OpenFOAM. In the developed interFoam, a three-dimensional wavemaker boundary condition based on directional spectra and absorbing boundary conditions are added. The numerical model had been used to simulate multi-directional freak waves. The performance proof of the numerical model was carried out by comparing the numerical results with experiments and target spectra. And then Effects of grid interval and maximum courant number on multi-directional freak wave simulation are analyzed. The freak wave groupiness are examined and compared by the conventional run length approach and smoothed instantaneous wave energy history approach. The following conclusions are drawed. The satisfactory multi-directional freak waves result on the condition of the grid resolution of 0.02m0.01m0.02m and the courant number of 0.25. The energy approach is more appropriate for freak wave groupiness description.

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A study on kinematics characteristics of freak wave

Cited by 11 publications

References 10 publications

Effect of Scanning Speed on Microstructure and Properties of Laser Cladding Fe‐0.3C‐15Cr‐1Ni High Hardness Corrosion‐Resistant Alloy Coating on 3Cr13 Surface

Effect of Scanning Speed on Microstructure and Properties of Laser Cladding Fe‐0.3C‐15Cr‐1Ni High Hardness Corrosion‐Resistant Alloy Coating on 3Cr13 Surface

The Effects on Water Particle Velocity of Wave Peaks Induced by Nonlinearity under Different Time Scales

Study on Numerical Simulation of Three-dimensional Multi-directional Freak Waves Based on OpenFOAM

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