Dynamic Analysis of a Moored Spar Platform in a Uniform Current: Fluid Load Prediction Using a Surrogate Model

Author:

Wei Xinming1,Zhu Xiangqian12ORCID,Cao Ruiyang1,Wang Jinglei3,Li Xinyu1,Li Qing’an4,Choi Jin-Hwan5

Affiliation:

1. Key Laboratory of High-Efficiency and Clean Mechanical Manufacture of MOE, National Demonstration Center for Experimental Mechanical Engineering, School of Mechanical Engineering, Shandong University, Jinan 250061, China

2. Research Institute of Shandong University, Rizhao 276800, China

3. CSSC Haizhuang Windpower Co., Ltd., Chongqing 401122, China

4. Institute of Engineering Thermal Physics, Chinese Academy of Sciences, Beijing 100190, China

5. Department of Mechanical Engineering, Kyunghee University, Yongin 449791, Republic of Korea

Abstract

A moored spar platform, equipped with various instruments, serves as a crucial tool in hydrological monitoring. However, conducting dynamic analyses of a single spar that endures wind and current requires significant amount of computational time. To address this challenge, this study proposes an efficient surrogate model to represent fluid loads. A database is established to capture the relationship between fluid loads, spar displacements and uniform currents based on a numerical model of the spar. Subsequently, an artificial neural network method is employed to construct the surrogate model. Finally, the surrogate model is integrated with a numerical model of the cable, developed using the lumped mass method, to create a coupled model of the moored spar. The dynamic responses of this coupled model align closely with those obtained from the purely numerical model, demonstrating the efficacy of the surrogate model in capturing fluid loads on the spar. In addition to the surrogate model generation approach, this research provides an efficient method to couple the surrogate model with the numerical model in dynamic analysis of floating systems in uniform currents.

Publisher

MDPI AG

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Current Loads on a Horizontal Floating Flexible Membrane in a 3D Channel;Journal of Marine Science and Engineering;2024-09-07

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