上海交通大学学报

上海交通大学学报 >

2025 , Vol. 59 >Issue 8: 1059 - 1066

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2023.470

船舶海洋与建筑工程

附壁射流式多金属结核采集装置几何参数优化

  • 张栢源 ,
  • 赵国成 ,
  • 肖龙飞
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  • 1.上海交通大学 海洋工程国家重点实验室, 上海 200240
    2.上海交通大学 海洋装备研究院, 上海 200240
    3.上海交通大学三亚崖州湾深海科技研究院, 海南 三亚 572024
张栢源(2000—),硕士生,从事深海水力集矿装置设计与优化研究.
赵国成,助理研究员,电话(Tel.): 021-34207184;E-mail: guocheng.zhao@sjtu.edu.cn.

收稿日期: 2023-09-18

  修回日期: 2023-10-22

  录用日期: 2023-11-13

  网络出版日期: 2023-11-17

基金资助

国家自然科学基金青年科学基金项目(52301332);上海市“科技创新行动计划”扬帆专项(23YF1419800);三亚市科技创新专项(2022KJCX67)

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Optimization of Geometrical Parameters of Coandă-Effect-Based Polymetallic Nodule Collection Device

  • ZHANG Baiyuan ,
  • ZHAO Guocheng ,
  • XIAO Longfei
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  • 1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
    2. Institute of Marine Equipment, Shanghai Jiao Tong University, Shanghai 200240, China
    3. SJTU Yazhou Bay Institute of Deepsea Sci-Tech, Sanya 572024, Hainan, China

Received date: 2023-09-18

  Revised date: 2023-10-22

  Accepted date: 2023-11-13

  Online published: 2023-11-17

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摘要

采集海底矿石颗粒是开发深海矿产资源的核心技术.基于康达效应的附壁射流式集矿技术被认为是一种具有工程应用潜力的集矿方法.基于实验验证的计算流体力学-离散元(CFD-DEM)数值模拟方法,以提高矿粒采集率为优化目标,开展集矿装置几何参数优化研究.探究集矿装置凸曲壁曲率半径与矿粒直径之比(R/d)、射流切向弧度(θ)和射流厚度与矿粒直径之比(b/d)对临界无因次射流流量(q0)的影响规律,并对各参数影响的显著性进行了比较.同时,结合集矿流场流速分布特征阐释矿粒受力运动特性.研究结果表明,b/d对集矿效率的影响最大,R/d次之,θ的影响最小.对比工况中,当R/d = 9、θ = 1.05 rad、b/d = 0.26时,矿粒采集效果最佳.本研究可为设计研发高效低扰动集矿装置提供理论支撑.

关键词： 多金属结核; 附壁射流采集; 计算流体力学-离散元法; 矿粒采集率; 参数优化

本文引用格式

张栢源 , 赵国成 , 肖龙飞 . 附壁射流式多金属结核采集装置几何参数优化[J]. 上海交通大学学报, 2025 , 59(8) : 1059 -1066 . DOI: 10.16183/j.cnki.jsjtu.2023.470

Abstract

The collection of seabed ore particles is a core technology of exploiting deep sea mineral resources, with wall-attached jet collection technology based on Coandă-effect being considered as a nodule collection method with engineering application potential. Based on the experimentally verified CFD-DEM numerical simulation, the optimization of geometric parameters of the collection device is conducted to improve pick-up efficiency. The influences of three geometric parameters, i.e., the ratio of the curvature radius of the convex curved wall to the diameter of the nodule particle R/d, the tangential radian of the jet θ, and the ratio of the thickness of the jet to the diameter of the nodule b/d on the critical unconditional jet flow rate q0, are investigated and compared. The nodule collection characteristics are revealed through an analysis of the flow field characteristics. The results show that b/d has the greatest influence on the pick-up efficiency, followed by R/d, while θ has the least. The performance of nodule collection is optimal when R/d=9, θ=1.05 rad, and b/d=0.26 in contrast conditions. This research provides technical support for designing and developing the Coandă-effect-based collection devices.

Key words： polymetallic nodule; Coandă-effect-based collection; computational fluid dynamics-discrete element method (CFD-DEM); nodule pick-up efficiency; parametric optimization

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