The collision behaviors of non-spherical regular particle-wall in three-dimensional space: Modeling investigation

To accurately simulate the motion process of the particle -wall collision, collision experiments were conducted on the spherical particles and non -spherical regular particles. The rebound angles of the normal and tangent plane, the model factor, and the particle shape factor were proposed. Based on the rebound angle distribution functions and model factor functions, the collision recovery coefficient distribution functions were obtained, and a threedimensional non -spherical regular particle -wall collision model was established. The experimental results show that as the shape factor increases, the normal and tangential collision recovery coefficients increase, the distribution becomes more concentrated, and the prediction and experimental errors significantly decrease. The model has high accuracy in predicting the mean of the collision recovery coefficients, the prediction and experimental error of the mean normal collision recovery coefficient is less than 10.5%, and the prediction and experimental error of the mean tangential collision recovery coefficient is less than 6.8%.