深海多金属结核流态化采集头流场参数匹配  

Matching of Flow Field Parameters of Deep-Sea Polymetallic Nodules Fluidized Collector

作　　者：张东宽 官雷 曹华德 夏建新[1] ZHANG Dongkuan;GUAN Lei;CAO Huade;XIA Jianxin(Department of Environment,Minzu University of China,Beijing 100081,China;Department of Ocean Sciences,China University of Geosciences(Beijing),Beijing 100083,China)

机构地区：[1]中央民族大学环境系,北京100081 [2]中国地质大学(北京)海洋学院,北京100083

出　　处：《海洋技术学报》2022年第4期53-60,共8页Journal of Ocean Technology

基　　金：国家自然科学基金项目(U1906234,51339008);国家重点研发计划资助项目(2021YFC2801500)。

摘　　要：深海蕴藏着丰富的矿产资源,其中,多金属结核可能成为未来金属资源的有效保障。开发多金属结核的难点之一就是如何将矿石从沉积物中高效绿色采集到采矿车上,水力采集方式是目前研究的热点。基于双排喷嘴射流的水力式集矿装置因具有结构简单、可靠性高及能耗较低等优点,受到广泛关注。利用流体仿真分析软件对不同射流角度、不同抽吸速度的采集头内部流场的速度场进行数值模拟与参数匹配研究,采用标准k-ε湍流模型,以采集头有效作用区上喷流速度的平均值和离散系数来评价采集头流场效果。结果表明,采集头采用前后射流与水平方向呈70°角、前排喷嘴射流速度10 m/s、后排喷嘴射流速度15 m/s、抽吸速度为5 m/s等参数时,内部流场效果相对较好。The deep sea contains abundant mineral resources,among which polymetallic nodules may become an effective guarantee for future metal resources.One of the difficulties in the development of polymetallic nodules is how to efficiently and greenly collect polymetallic nodules from sediments to mining vehicles.The hydraulic collection method is currently a research hotspot.The hydraulic polymetallic nodules collector based on the double-row nozzle jet has attracted extensive attention due to its simple structure,high reliability and low energy consumption.The velocity field of the internal flow field of the collection head with different jet angles and different suction speeds is numerically simulated by using the numerical simulation software.The turbulence model adopts the standard k-turbulence model.The discrete coefficient is used to evaluate the effect of the flow field of the collector.The results show that when the front and rear jets are 70°from the horizontal direction,when the jet velocity of the front nozzle is 10 m/s,the jet velocity of the rear nozzle is 15 m/s,and the suction velocity is 5 m/s,the internal flow field effect of the collector is relatively good.

关 键 词：深海多金属结核 水力式采集 数值模拟 参数匹配 

分 类 号：TD857[矿业工程—金属矿开采]