In this study, the computational fluid dynamics (CFD) analysis method was used to simulate the mixing and transportation characteristics of water and mud in a jet pump. By observing the fluid mixing law in the mixing chamber, throat and other structures, the internal flow field distribution of the jet pump under different working conditions was compared and studied. As a result, the internal flow details and operation performance curves of a certain size jet mud pump were obtained. It provides theoretical support for the optimisation design of a slurry jet pump in dredging engineering.
Tag Archives: Slurry
Estimating sediment erosion of a centrifugal dredge pump’s impeller
Sediment erosion is a phenomenon of mechanical wear of components that decreases efficiency and uptime of the dredging process. Dredge pumps are designed to handle mixtures of water and solid particles with varying particle size from less than 0.002 mm to greater than 200 mm. A dredge pump’s overall effectivity in the field depends upon its uptime. Uptime is influenced by the number of times the pumping process is interrupted, which can be due to maintenance combating the material loss, clogging, etc. This research deals with the erosion phenomena by considering a framework of numerical models, capable of qualitative and quantitative erosion estimation, coupled with experiments for validation. Coordinate Measurement Machine (CMM) is used for surface roughness measurement before and after the experiment, thus depicting the material loss due to erosion.
Which slurry transport regime should be used and why?
With five possible flow regimes to choose from for slurry transport, selecting just one can require consideration. Fortunately, one of these regimes has a simple criterion: a ratio of the particle diameter to the pipe diameter.
Pipe Size Effect on Hydraulic Transport of Jumoonjin Sand Experiments in a Dredging Test Loop
The diameter of a slurry pipeline is an important factor in a design and an operation of a pipeline and pump system connected with a dredger. However, the effect of pipe diameter on the slurry flow behaviour (frictional head losses, specific energy consumption, deposition limit velocity) is not
Numerical Simulation of the Development of Density Waves in a Long Pipeline and the Dynamic System B
Slurry transport is used in dredging and mining to transport solid/liquid mixtures over a long distance and very frequently multiple pumps are utilised.