Study on the Influence of Different Factors on Pneumatic Conveying in Horizontal Pipe

• Published in: Applied sciences 2023-04, Vol.13 (9), p.5483
• Main Authors: Wang, Chengming, Li, Wenqi, Li, Baojun, Jia, Zezhong, Jiao, Shihui, Ma, Hao
• Format: Article
• Language: English
• Subjects: Air flow; Computational fluid dynamics; Computer applications; Conveying; conveying characteristics; conveying wind speed; Discrete element method; Dynamic pressure; Energy consumption; Fluid dynamics; Fluid flow; Friction; gas-solid coupling; Hydrodynamics; K-epsilon turbulence model; Mass flow rate; Mathematical models; Multiphase flow; Numerical analysis; Particle mass; particle mass flow rate; Particle size; Phosphorus; Pipes; pneumatic conveying; Pneumatic conveyors; Pneumatics; Pressure drop; Simulation; Simulation methods; Two phase flow; Velocity; Velocity distribution; Viscosity; Wind speed
• ISSN: 2076-3417; 2076-3417
• DOI: 10.3390/app13095483

Aiming at the problems of high energy consumption and particle breakage in the pneumatic conveying process of large-scale breeding enterprises, in this paper, based on the theoretical calculated value of particle suspension velocity, a computational fluid model and a discrete element model are established based on computational fluid dynamics (CFD) and discrete element method (DEM). Then, through the numerical simulation of gas-solid two-phase flow, the influence of four factors of conveying wind speed, particle mass flow rate, pipe diameter, and particle size on the velocity distribution of particles in a horizontal pipe, dynamic pressure change in the pipe, pressure drop in the pipe, and solid mass concentration are studied. The results show that the k-ε turbulence model can better simulate the movement of gas-solid two-phase flow, and through the analysis of the simulation, the influence of four different factors on the conveying characteristics is obtained, which provides a scientific basis for the construction of the conveying line.