Implementing van der Waals forces for polytope particles in DEM simulations of clay
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866912432154214400 |
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| author | Krengel, Dominik Chen, Jian Yu, Zhipeng Matuttis, Hans-Georg Matsushima, Takashi |
| author_facet | Krengel, Dominik Chen, Jian Yu, Zhipeng Matuttis, Hans-Georg Matsushima, Takashi |
| contents | Clay minerals are non-spherical nano-scale particles that usually form flocculated, house-of-card like structures under the influence of inter-molecular forces. Numerical modeling of clays is still in its infancy as the required inter-particle forces are available only for spherical particles. A polytope approach would allow shape-accurate forces and torques while simultaneously being more performant. The Anandarajah solution provides an analytical formulation for van der Waals forces for cuboid particles but in its original form is not suitable for implementation in DEM simulations. In this work, we discuss the necessary changes for a functional implementation of the Anandarajah solution in a DEM simulation of rectangular particles and their extension to cuboid particles. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_13046 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Implementing van der Waals forces for polytope particles in DEM simulations of clay Krengel, Dominik Chen, Jian Yu, Zhipeng Matuttis, Hans-Georg Matsushima, Takashi Soft Condensed Matter Clay minerals are non-spherical nano-scale particles that usually form flocculated, house-of-card like structures under the influence of inter-molecular forces. Numerical modeling of clays is still in its infancy as the required inter-particle forces are available only for spherical particles. A polytope approach would allow shape-accurate forces and torques while simultaneously being more performant. The Anandarajah solution provides an analytical formulation for van der Waals forces for cuboid particles but in its original form is not suitable for implementation in DEM simulations. In this work, we discuss the necessary changes for a functional implementation of the Anandarajah solution in a DEM simulation of rectangular particles and their extension to cuboid particles. |
| title | Implementing van der Waals forces for polytope particles in DEM simulations of clay |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2506.13046 |