Abstract
To explore the energy loss caused by the elbow in the pneumatic transportation of stiff shotcrete, the numerical simulation of the gas-solid flow of stiff shotcrete was carried out based on CFD-DEM. The accuracy of the simulation results was verified by on-site test and parameter calibration. The relationship between air velocity, feed rate, R/D ratio, energy loss caused by elbow and maximum wear rate was studied by response surface methodology. A second-order response surface model between the energy loss caused by elbow and each factor was established. The relationship between the maximum wear rate and each factor was obtained. The effects of air velocity, feeding rate, and R/D ratio on the spatial position and velocity distribution of particles were revealed. This paper can provide a reference for the pneumatic conveying of shotcrete. • The effects of the solid-gas ratio on the energy loss caused by the elbow are studied. • Energy loss caused by the elbow shows a quadratic perturbation with the change of factors. • The maximum wear has a linear relationship with the factors. • The spatial and velocity distributions of particles at different positions are revealed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
