| The efficient collection of seabed mineral resources is one of the key technologies of deep-sea mining. The hydraulic collection method has become the mainstream collection method because of its green and efficient characteristics. In order to study the ore collection capacity of different hydraulic collection schemes, this paper designed five different ore collection schemes by adjusting the position of the main nozzle and the position and row number of the auxiliary nozzle. Through numerical simulation of these five ore collection schemes, and analysis of their flow field characteristics and movement trajectory of nodules, combined with the collection rate of each scheme, the best ore collection scheme was obtained. The results show that scheme 4 with rear auxiliary nozzle has the best ore collection effect, and the collection rate is 62.47% . In scheme 4, the rear auxiliary nozzle makes the flow field distribution of the ore collecting head more reasonable, which not only plays the role of lifting, but also effectively reduces the collision probability between the nodule and the wall, reduces the energy loss, and improves the collection efficiency. This study provides a reference for the optimal design of the polymetallic nodule hydraulic ore collector, especially in the setting of auxiliary nozzles, which can effectively improve the collection efficiency of the ore collector. |
