Characterization of particle motion of a double-row hydraulic sluicing collector for deep-sea mining

In this study, a collection device model with an induced jet was designed based on the double -jet effect. A numerical simulation was conducted to correct the drag coefficient model so that its Reynolds number range satisfies the drag coefficient in the case of a high Reynolds number ( Re >= 10,000) in the double -row hydraulic sluicing structure. The pressure and shear stress distributions on a fixed single -particle sphere have been provided. The analysis focused on motion trajectories, normalized speeds, and normalized forces of both single particles and multiple particles. The statistical analysis revealed the collision characteristics between particles and the wall in multi -particle scenarios. It is found that the forces particle suffered during the double jet effect is primarily the pressure gradient force, followed by the drag force. The vortex generated by convection during the collection process enhances the particle collection. Classification statistics indicates four types of path trajectories, with the first type accounting for 17% and the second type accounting for 73% of the particles.