Numerical Method and Test Verification for Temporary Sludge Pipeline Transportation

Abstract

In response to the problems of poor stability and low efficiency in the transportation of temporary sludge in Shanghai Laogang, based on indoor experimental data, numerical simulation was used to predict the pressure drop characteristics of pipelines with different solid content, pipe diameters, and flow velocities, the numerical results show that at the same flow rate and pipe diameter, the pressure drop increases with the increase of solid content; The pressure drop gradually increases with the increase of flow rate at the same pipe diameter and solid content, and when the the flow state inside the pipe changes, there is a turning point in the flow rate pressure drop curve; At the same flow rate and solid content, the pressure drop decreases with the increase of pipe diameter. Combined with test for pipe pressure drop, the numerical method was verified, which provides guidance for the optimization and improvement of sludge transportation plans and the selection of transportation pumps.