China Ocean Engineering

, Volume 31, Issue 5, pp 598–606

# Theoretical approximation of focusing-wave induced load upon a large-scale vertical cylinder

• Hong-xiang Xue
• Zhe Hu
• Wen-yong Tang
• Xiao-ying Zhang
• Kun-peng Wang
Article

## Abstract

Until now, most researches into the rogue-wave-structure interaction have relied on experimental measurement and numerical simulation. Owing to the complexity of the physical mechanism of rogue waves, theoretical study on the wave-structure issue still makes little progress. In this paper, the rogue wave flow around a vertical cylinder is analytically studied within the scope of the potential theory. The rogue wave is modeled by the Gauss envelope, which is one particular case of the well-known focusing theory. The formulae of the wave-induced horizontal force and bending moment are proposed. For the convenience of engineering application, the derived formulae are simplified appropriately, and verified against numerical results. In addition, the influence of wave parameters, such as the energy focusing degree and the wave focusing position, is thoroughly investigated.

### Keywords

rogue wave Gauss envelope upright cylinder potential theory analytical approximation

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© Chinese Ocean Engineering Society and Springer-Verlag GmbH Germany 2017

## Authors and Affiliations

• Hong-xiang Xue
• 1
• 2
• Zhe Hu
• 1
• 2
• Wen-yong Tang
• 1
• 2
• Xiao-ying Zhang
• 3
• Kun-peng Wang
• 4
1. 1.State Key Laboratory of Ocean EngineeringShanghai Jiao Tong UniversityShanghaiChina
2. 2.Collaborative Innovation Center for Advanced Ship and Deep-Sea ExplorationShanghaiChina
3. 3.Key Laboratory of Ships and Ocean Engineering of Fujian ProvinceJimei UniversityXiamenChina
4. 4.School of Naval Architecture and Ocean EngineeringJiangsu University of Science and TechnologyZhenjiangChina