深海多金属硫化物集矿罩的流场分析和参数优化

发布时间：2018-06-23 01:09

本文选题：深海多金属硫化物 + 固-液两相流　；参考：《中南大学学报(自然科学版)》2017年05期

【摘要】：在1种新的深海多金属硫化物开采设备的基础上,以双螺旋滚筒采集罩下的流体为研究对象,针对硫化物采集过程中可能形成的复杂多相流以及可能造成对周围海域生态环境污染等问题,采用Fluent的Coupled SIMPLE算法及RNG k-ε湍流模型对流场进行仿真计算和分析比较,并且对多个物理参数,如2个滚筒之间的中心距、滚筒的转速、转动方向、矿物的堆积高度、矿物的颗粒直径和抽吸速度等进行优化。研究结果表明:为了达到最优的抽吸效果,2个滚筒中心距有最优值;海水入口处的速度不是越大越好,当海水入口处速度达到2 m/s后,再增加海水速度对缩短抽吸时间的效果不明显;2个滚筒相向运动对缩短抽吸时间效果明显;减少矿物粒径对缩短抽吸时间效果不明显。
[Abstract]:On the basis of a new deep sea polymetallic sulphide mining equipment, a double helix drum is used to collect fluid under the hood. In order to solve the problems of complex multiphase flow and possible pollution to the surrounding sea area, fluent coupled simple algorithm and RNG k- 蔚 turbulence model are used to simulate and compare the convection field. Several physical parameters, such as the center distance between the two rollers, the rotational speed of the drum, the rotation direction, the height of the mineral accumulation, the particle diameter of the mineral and the suction velocity, are optimized. The results show that in order to achieve the optimal suction effect, the center distance of the two rollers has an optimum value, and the velocity at the inlet of seawater is not as large as possible, when the velocity of the inlet reaches 2 m / s, The effect of increasing seawater velocity on shortening the suction time is not obvious; the effect of two cylinder phase motion on shortening the suction time is obvious; and the effect of reducing mineral particle size on shortening the suction time is not obvious.
【作者单位】：中南大学机电工程学院;长沙矿冶研究院深海矿产资源开发利用技术国家重点实验室;中南大学深圳研究院;
【基金】：国家自然科学基金资助项目(51074179) 深圳市科技创新基础研究项目(JCYJ20130401160614378)~~
【分类号】：TD857

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