渔业现代化

渔业现代化 ›› 2025, Vol. 52 ›› Issue (6): 9-19. doi: 10.26958/j.cnki.1007-9580.2025.06.002

• • 上一篇    下一篇

船载养舱中可溶颗粒物的建模与输运特性研究

郭适源1，郭晓宇1,2(1 上海交通大学船舶海洋与建筑工程学院，上海 200240;
2 上海交通大学水动力学教育部重点实验室，上海 200240;)   

  1. (1 上海交通大学船舶海洋与建筑工程学院，上海 200240;
    2 上海交通大学水动力学教育部重点实验室，上海 200240;)
  • 出版日期:2025-12-20 发布日期:2025-12-26
  • 通讯作者: 郭晓宇(1981—)，女，博士，副研究员，研究方向：水动力学。E-mail:xiaoyuguo@sjtu.edu.cn
  • 作者简介:郭适源(2000—)，男，硕士研究生，研究方向：颗粒物输运。E-mail:122010910005@sjtu.edu.cn

  • 基金资助:
    国家重点研发计划(2022YFD2401101);国家自然科学基金面上项目(12472244)

Research on the modeling and transport characteristics of soluble particles in a vessel-based aquaculture tank#br#
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GUO Shiyuan1，GUO Xiaoyu1,2(1 MOE Key Laboratory of Hydrodynamics, Shanghai Jiao Tong University, Shanghai 200240, China;#br# 2 School of Ocean and Civil Engineering,Shanghai Jiao Tong University, Shanghai 200240, China)#br#

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  1. (1 MOE Key Laboratory of Hydrodynamics, Shanghai Jiao Tong University, Shanghai 200240, China;
    2 School of Ocean and Civil Engineering,Shanghai Jiao Tong University, Shanghai 200240, China)

  • Online:2025-12-20 Published:2025-12-26

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摘要： 养殖工船是现代海洋渔业发展的重要方向，养舱内颗粒物的输运特性对养舱水环境评估具有重要意义。本研究基于欧拉-拉格朗日计算思想研究可溶性颗粒物在漩涡流场中的输运特性。考虑进出水的影响，养舱水平方向采用 LES （Smagorinsky 模型）与水深方向采用RANS模型的混合建模方法，构建了数值养舱，采用朗之万模型模拟漩涡流动中颗粒物的运动与沉降过程。研究了不同流动条件下颗粒物的输运特性，分析了颗粒物最大排出率及滞留时间随进水角度、进水流量、颗粒密度及溶解性的变化规律。结果显示：当进水角度由0°增加到60°，颗粒物最大排出率将由74%下降到37%；0.25 m3/s提高到1.25 m3/s，最大排出率由64%提高到98%；常见的可溶解颗粒物运动特征较为接近，当颗粒溶解性进一步增大，颗粒物的最大排出率出现12%的下降。研究表明，在特定进水流量下，调整进水角度和颗粒密度可有效提升颗粒物最大排出率，颗粒溶解性则对排出率具有抑制作用。


关键词: 养殖工船, 养舱, 欧拉-拉格朗日, 朗之万模型, 颗粒物输运, 颗粒物溶解

Abstract: Aquaculture vessels represent an important direction in the development of modern marine fisheries, and the transport characteristics of particles within rearing tanks are of great significance for assessing tank water environments. In this study, the transport behavior of soluble particles in a vortex flow field was investigated based on the Euler–Lagrangian computational framework. Considering the effects of inflow and outflow, a hybrid modeling approach was adopted, employing LES (Smagorinsky model) in the horizontal direction and a RANS model in the vertical direction, thereby constructing a numerical rearing tank. The Langevin model was applied to simulate the motion and settling of particles in vortex flows.The study examined particle transport characteristics under different flow conditions, analyzing the variation of maximum discharge rate and residence time with inflow angle, inflow discharge, particle density, and solubility. Results show that when the inflow angle increases from 0°to 60°, the maximum discharge rate of particles decreases from 74% to 37%. As the inflow discharge rises from 0.25 m³/s to 1.25 m³/s, the maximum discharge rate increases from 64% to 98%. The transport characteristics of commonly soluble particles were found to be largely similar. However, with further increases in particle solubility, the maximum discharge rate decreased by 12%.These findings indicate that, under a given inflow discharge, adjusting inflow angle and particle density can effectively enhance the maximum discharge rate of particles, whereas particle solubility exerts a suppressing effect on discharge performance.


Key words: aquaculture vessel, rearing tank,Euler–Lagrange, Langevin model, particle transport, particle dissolution