Abstract
A new model is proposed for a non-spherical solid particles' impact interaction with a surface as applied to gas-particle flows over surfaces. The range of a particle impact speed typical for a vehicle flight in a dusty atmosphere is considered. The model is based on the laws of mechanics and experimental data on the restitution coefficient of the particle normal velocity. The tangential force impulse during a particle-surface interaction is assumed to be proportional to both the normal impulse and the mean tangential velocity of the particle contact point. The space orientation of incident particles relative to the surface is considered as random. The rebound of particles of different shape with varying shape parameters and of a particle mixture is studied numerically. Statistical characteristics of particles' rebound and scattering are obtained. Comparison with the known experimental data of numerical results for the mean values of the normal and tangential velocities of the particles' gravity centers in the plane of impact after rebound showed their good agreement. Keywords: dispersed particles, 3D model of impact, numerical investigation, statistical characteristics of rebound and scattering, comparison with experimental data.
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.
