CFD-DEM Simulation of the Transport of Manganese Nodules in a Vertical Pipe
Source abstract
Abstract
The present study aims to describe the characteristics of the hydraulic transport of manganese nodules in a vertical pipe. The solid–liquid two-phase flows were simulated using a numerical technique that combines the computational fluid dynamics (CFD) method and the discrete element method (DEM). Manganese nodules with diameters of 5.0 mm, 15.0 mm, and 30.0 mm were selected. The effects of the initial solid volume fraction and the initial mixture velocity were investigated. The results show that with increasing initial solid volume fraction, the liquid and solid velocities decrease but the total pressure drop over the pipe increases. Small particles are responsible for high particle collision frequency, which causes decreases in both the liquid velocity and the total pressure drop. Energy loss is aggravated by increasing the initial mixture velocity, manifesting in the increase of the total pressure drop. The retention ratio of manganese nodules varies inversely with the initial mixture velocity. A formula is proposed to describe the pressure drop due to the presence of solid particles and collisions.
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Research context
OpenAlex topics: Particle Dynamics in Fluid Flows · Granular flow and fluidized beds · Aerosol Filtration and Electrostatic Precipitation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Shanghai Marine Equipment Research Institute, Shanghai 200031, China
Zibo Institute for Product Quality Inspection, Zibo 255025, China
Funding
Science and Technology Plan Project of State Administration for Market Regulation of China · project of Science and Technology Commission of Shanghai Municipality · Postgraduate Research and Practice Innovation Program of Jiangsu Province · National Key Research and Development Program of China
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