摘要
受近海养殖空间限制及环境污染问题的影响,近年来,海上养殖业逐渐向深远海发展。然而,深远海的气候更为恶劣复杂,为保障养殖装备的结构安全,需对其进行水动力特性研究。以养殖装备的网衣作为研究对象,使用多孔介质理论对网衣结构进行建模,采用开源CFD软件OpenFOAM进行数值模拟研究,探究了网衣与规则波和聚焦波的相互作用。结果表明,在规则波输入下,随着密实度和特征速度的增大,网衣阻力逐渐增加,随着特征长度的增加,网后波浪的透射系数逐渐增加;在聚焦波输入下,波浪的频域分布没有显著变化,随着网目尺寸的增大,网衣阻力逐渐增加。最后,综合数值计算的结果,将雷诺数和KC数作为输出参数,建立了极端波浪下多孔介质网衣阻力的预报模型。
Affected by the limitation of offshore aquaculture space and environmental pollution problems,the marine aquaculture industry has gradually developed into the deep sea.However,the climate in the deep sea is more severe and complex.In order to ensure the structural safety of aquaculture equipment,it is necessary to conduct research on its hydrodynamic characteristics.As an important aquaculture equipment,the fishing net is taken as the research object.The porous medium theory was used to model the structure of the net,the open source CFD software OpenFOAM was used to conduct numerical simulation research,and the interaction of the net with regular waves and focused waves was explored.The results show that in the case of regular waves as input,with the increase of solidity ratio of the fishing net and the characteristic velocity,the resistance of the net increases gradually,and with the increase of the characteristic length,the transmission coefficient of the wave behind the net location increases gradually;in the case of focused waves as input,the frequency domain distribution did not change significantly,and with the increase of mesh size,the mesh resistance gradually increased.Finally,based on the results of numerical results,the Reynolds number and KC number are used as output parameters to establish a prediction model for the mesh resistance of porous media under extreme waves.
作者
陈诚
宋炜
谢正丽
王磊
刘永利
CHEN Cheng;SONG Wei;XIE Zhengli;WANG Lei;LIU Yongli(East China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Shanghai 200090,China;State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Fishery Machinery and Instrument Research Institute,Chinese Academy of Fishery Sciences,Shanghai 200092,China)
出处
《渔业现代化》
CSCD
2022年第5期115-126,共12页
Fishery Modernization
基金
科技部国家重点研发计划“蓝色粮仓科技创新专项(2019YFD0900904)”
三亚崖州湾科技城2020年重点项目(SKJC-2020-01-006)
海南省自然科学基金(520QN290)
山东省支持青岛海洋科学与技术试点国家实验室重大科技专项(2018SDKJ0303-4)
财政部和农业农村部:国家现代农业产业技术体系资助(CARS-47)
中国水产科学研究院基本科研业务费(2020TD76)。
关键词
养殖装备
网衣
水动力特性
多孔介质模型
CFD
aquaculture equipment
net
hydrodynamic characteristics
porous media theory
CFD