Dimension⁃reduction simulation for large scale multiple circular cylinders random wave force field

被引：0
作者：
Liu Z. [1 ]
Dong X. [1 ]
Zhang W. [1 ]
机构：
[1] School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan
来源：
Zhendong Gongcheng Xuebao/Journal of Vibration Engineering | 2022年 / 35卷 / 04期
关键词：
Diffraction theory; Dimension⁃reduction simulation; Large⁃scale cylinders; Random wave force;
D O I：
10.16385/j.cnki.issn.1004-4523.2022.04.008
中图分类号：
学科分类号：
摘要：
According to the energy characteristics of random waves, a method for judging large-scale circular cylinders subjected to random waves is suggested. On this basis, the dimension-reduction simulation method for random wave force field in terms of large-scale single circular cylinder and multiple circular cylinders is derived utilizing the power spectral density function of random wave force and the random function-based dimension-reduction idea. Numerical analysis shows that the relative errors of mean, standard deviation, power spectrum, auto-correlation functions and cross-correlation functions generated by the proposed dimension-reduction method are all in good agreement with the corresponding target values. Moreover, comparison indicates that the simulation accuracy of the proposed dimension-reduction method is higher than that of Monte Carlo method, and the simulation efficiency is equivalent to Monte Carlo method. Meanwhile, large-scale circular cylinders are compared and analyzed based on diffraction theory and Morison equation to investigate the errors caused by large-scale cylinders based on Morison equation. Through the comparisons and analysis of the simulation results of cylinder in the case of single cylinder and cylinder group, the influence of cylinder group effect on wave force is explained. © 2022, Editorial Board of Journal of Vibration Engineering. All right reserved.
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页码：849 / 856
页数：7
相关论文
共 24 条
  • [1] Code of hydrology for harbour and waterway:JTS 145-2015, (2015)
  • [2] MacCamy R C, Fuchs R A., Wave forces on piles: a diffraction theory [R], (1954)
  • [3] Qiu Dahong, The nonlinear wave force on a circular cylinder in shallow water, Journal of Hydraulic Engineering, 4, pp. 22-32, (1989)
  • [4] Wang Junjie, Wang Liantang, Nyström mathematical model of wave force on large scale cylinder, Advances in Water Science, 20, 1, (2009)
  • [5] Deng Shasha, Shen Huoming, Liu Lang, Et al., Research of calculation method for wave forces acting on large⁃scale bridge piers based on diffraction theory, Journal of Southwest Jiaotong University, 53, 2, (2018)
  • [6] Spring B H, Monkmeyer P L., Interaction of plane waves with vertical cylinders [C], Proceedings of the 14th International Conference on Coastal Engineering, pp. 1828-1847, (1974)
  • [7] Linton C M, Evans D V., The interaction of waves with arrays of vertical circular cylinders, Journal of Fluid Mechanics, 215, pp. 549-569, (1990)
  • [8] Tao Jianhua, Dou Xinyu, Random water wave forces on group cylinders, Chinese Journal of Computational Physics, 9, 7, (1992)
  • [9] Ji Xinran, Zou Li, Liu Shuxue, Et al., Experimental study on the multidirectional wave force on an array of cylinders, Engineering Mechanics, 36, 10, (2019)
  • [10] Morison J R, Johnson J W, Schaaf S A., The force exerted by surface waves on piles [J], Journal of Petroleum Technology, 2, 5, (1950)
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