上海交通大学学报（英文版） ›› 2013, Vol. 18 ›› Issue (6): 641-645.doi: 10.1007/s12204-013-1444-8

• •    下一篇

Separation Method of Bi-directional Reflected Waves and Oblique Incident Regular Waves

LI Jun1* (李 俊), CHEN Gang1,2 (陈 刚), YANG Jian-min1 (杨建民), PENG Tao1 (彭 涛)   

  1. (1. State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. Marine Design and Research Institute of China, Shanghai 200011, China)
  • 出版日期:2013-12-31 发布日期:2013-12-18
  • 通讯作者: LI Jun(李 俊) E-mail:lijunocean@sjtu.edu.cn

Separation Method of Bi-directional Reflected Waves and Oblique Incident Regular Waves

LI Jun1* (李 俊), CHEN Gang1,2 (陈 刚), YANG Jian-min1 (杨建民), PENG Tao1 (彭 涛)   

  1. (1. State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. Marine Design and Research Institute of China, Shanghai 200011, China)
  • Online:2013-12-31 Published:2013-12-18
  • Contact: LI Jun(李 俊) E-mail:lijunocean@sjtu.edu.cn

摘要： Wave reflection is one of the key problems affecting wave simulation quality in ocean engineering basin. The deep ocean engineering basin is equipped with two-sided segmented wavemakers and two wave absorbing beaches, which are located opposite to wave generators to reduce wave reflection effects. When an oblique longcrested wave is made by two-sided segmented wavemakers in a wave basin, two bi-directional reflected waves with the same azimuth but opposite propagation directions are generated. According to this feature, based on the two-point approach developed by Goda, a method to separate an incident regular wave from two bi-directional reflected waves using three wave gauges is proposed. The validity of this method is proved by numerical composite waves. The results indicate that the method can separate incident wave from reflected waves effectively. The method can be used to determine the reflection coefficient and verify the capacity of wave absorbing beaches in deep ocean engineering basin.

关键词: oblique regular wave, separation method, wave reflection, reflection coefficient

Abstract: Wave reflection is one of the key problems affecting wave simulation quality in ocean engineering basin. The deep ocean engineering basin is equipped with two-sided segmented wavemakers and two wave absorbing beaches, which are located opposite to wave generators to reduce wave reflection effects. When an oblique longcrested wave is made by two-sided segmented wavemakers in a wave basin, two bi-directional reflected waves with the same azimuth but opposite propagation directions are generated. According to this feature, based on the two-point approach developed by Goda, a method to separate an incident regular wave from two bi-directional reflected waves using three wave gauges is proposed. The validity of this method is proved by numerical composite waves. The results indicate that the method can separate incident wave from reflected waves effectively. The method can be used to determine the reflection coefficient and verify the capacity of wave absorbing beaches in deep ocean engineering basin.

Key words: oblique regular wave, separation method, wave reflection, reflection coefficient

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