Abstract: In view of the requirements of ocean-going trawler renovation and reconstruction project in China, it is required to design standard ship types that meet the requirements of main small and medium-sized ocean-going trawlers. In this paper, the resistance characteristics of 33.2 m ocean-going double deck trawler are analyzed theoretically based on the regression polynomial of residual resistance of Oosterveld in Dutch pond, and the resistance characteristics of CFD fishing vessel are analyzed by solving N-S equation with Flow-3D fluid analysis software, VOF method and RNG k-e model. Resistance towing tests are carried out in the towing tank of the ship model. The mathematical model of resistance regression suitable for small and medium-sized fishing vessels is determined through comparison and analysis, and the accuracy and feasibility of CFD analysis are verified. The precision and accuracy of resistance characteristic analysis of standardized ocean-going fishing vessels are improved with comprehensive analysis method, and the technical scheme of low resistance performance optimization of standardized fishing vessels is studied and formed. The real ship saves energy of more than 20% in pilot application, which is in line with the upgrading and reconstruction target of “safe, energy-saving, economical, environmental and livable” ocean-going fishing vessels.

Key words: offshore fishing, trawler, mathematical model of resistance regression, CFD resistance characteristic analysis, ship model test

摘要： 针对中国远洋拖网渔船更新改造工程的要求，需要设计满足远洋主流中小型拖网渔船的标准化船型。本研究对33.2 m远洋双甲板拖网渔船船型进行基于荷兰水池欧斯特怀尔德（Oosterveld）的海船剩余阻力回归多项式的阻力特性理论分析，并利用Flow-3D流体分析软件，使用VOF方法，结合RNG k-ε模型，通过求解N-S方程进行CFD渔船船型阻力特性分析，并在船模拖曳水池进行阻力拖曳试验。通过比较分析确定了适合中小型渔船的阻力回归数学模型，验证了CFD分析的准确性和可行性。通过综合分析方法，提高远洋标准化渔船阻力特性分析的精确性和准确度，并研究形成标准化渔船低阻力船型性能优化技术方案。实船示范应用节能20%以上，达到了远洋渔船升级改造实现“安全、节能、经济、环保、适居”的目标要求。

关键词: 远洋渔业, 拖网渔船, 阻力回归数学模型, CFD阻力特性分析, 船模试验