NURBS-based DEM for non-spherical particles
| Autor: | Wei Ge, Philippe Ricoux, Shiwen Liu, Feiguo Chen |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
020401 chemical engineering
Rate of convergence Computer science General Chemical Engineering Scheme (mathematics) Applied mathematics General Materials Science 02 engineering and technology 0204 chemical engineering 021001 nanoscience & nanotechnology 0210 nano-technology Representation (mathematics) Discrete element method |
| Zdroj: | Particuology. 49:65-76 |
| ISSN: | 1674-2001 |
| DOI: | 10.1016/j.partic.2019.04.005 |
| Popis: | The discrete element method (DEM) is used to analyze complex practical granular systems; however, the representation of real shapes is an important consideration because behavior of non-spherical particles is unlike that of spherical particles both individually and collectively. In this study, we use non-uniform rational basis-splines (NURBS) to describe the shapes of non-spherical particles and introduce a contact detection scheme based on quadratic convergence, to simulate the behaviors of elliptical particles. The simulation results are compared with those based on polygons, in terms of the shape description and contact treatment, to demonstrate the high accuracy and efficiency of NURBS-based DEM. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect