郑建丽,谌志新
(农业部渔业装备与工程技术重点实验室,十大网投正规信誉官网,上海 200092)
摘要:为了研究“上海市渔船标准化节能船型”中30 m级桁杆拖网渔船的阻力特性,将计算流体力学应用于标准化节能船型的数值模拟计算中,通过采用 SST(剪切应力输运)湍流模型和求解不可压缩流体动量方程,来计算该船型的裸船体状态下的不同航速对应的阻力值。文中详细叙述了建模、设定条件、划分网格等作业流程,其计算结果与船模试验结果高度吻合,可为中小型渔船的节能降阻研究提供理论依据。
关键词:拖网渔船;阻力计算;计算流体动力学;数值模拟;网格划分
Numerical simulation and grid division for energy-saving trawler
ZHENG Jian-li CHEN Zhi-xin
( Key laboratory of Fishery Equipment and Engineering, Ministry of Agriculture, Fishery Machinery and Instrument Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200092, China )
Abstract: in this paper, we focus on the calculation of resistance of 30 m beam trawler in "Research on the Standardized Energy-saving Ship Form for Shanghai Fishing Vessel". We apply time-averaged Navier-Stokes equation (RANS) in conjunction with k-ω turbulence model to compute resistance of naked hull under different speeds. Details on ship model, boundary conditions and mesh generation are discussed. The computation results agree well with ship model test results. This paper provides a basic foundation for saving energy and reducing the resistance of small fishing vessel.
Key words: trawler fishing vessel; resistance calculation; CFD; numerical simulation; meshing generation
基金项目:公益性行业(农业)科研专项经费项目“渔业节能关键技术研究与重大设备开发”(201003024);渔船船型标准化及节能技术集成示范与推广(沪农科推学(2012)第2-3号)
作者简介:郑建丽(1983—),女,工程师,硕士,研究方向:渔船设计。E-mail: qing_sunshine@163.com
通讯作者:谌志新(1969—),男,研究员,硕士,研究方向:海洋渔业装备。E-mail: chenzhixin@fmiri.ac.cn
(来源:《渔业现代化》2012,40(2):45-49,26)