A two-phase Volume of Fluid approach to model rigid-perfectly plastic granular materials
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866916112026828800 |
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| author | Düsterhöft-Wriggers, Wibke Schubert, Svenja Rung, Thomas |
| author_facet | Düsterhöft-Wriggers, Wibke Schubert, Svenja Rung, Thomas |
| contents | Granular flow problems characterized by large deformations are widespread in various applications, including coastal and geotechnical engineering. The paper deals with the application of a rigid-perfectly plastic two-phase model extended by the Drucker-Prager yield criterion to simulate granular media with a finite volume flow solver (FV). The model refers to the combination of a Bingham fluid and an Eulerian strain measure to assess the failure region of granular dam slides. A monolithic volume-of-fluid (VoF) method is used to distinguish between the air and granular phases, both governed by the incompressible Navier-Stokes equations. The numerical framework enables modeling of large displacements and arbitrary shapes for large-scale applications. The displayed validation and verification focuses on the rigid-perfectly plastic material model for non-cohesive and cohesive materials with varying angles of repose. Results indicate a good agreement of the predicted soil surface and strain results with experimental and numerical data. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_00415 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A two-phase Volume of Fluid approach to model rigid-perfectly plastic granular materials Düsterhöft-Wriggers, Wibke Schubert, Svenja Rung, Thomas Fluid Dynamics Discrete Mathematics Geophysics 76-02 Granular flow problems characterized by large deformations are widespread in various applications, including coastal and geotechnical engineering. The paper deals with the application of a rigid-perfectly plastic two-phase model extended by the Drucker-Prager yield criterion to simulate granular media with a finite volume flow solver (FV). The model refers to the combination of a Bingham fluid and an Eulerian strain measure to assess the failure region of granular dam slides. A monolithic volume-of-fluid (VoF) method is used to distinguish between the air and granular phases, both governed by the incompressible Navier-Stokes equations. The numerical framework enables modeling of large displacements and arbitrary shapes for large-scale applications. The displayed validation and verification focuses on the rigid-perfectly plastic material model for non-cohesive and cohesive materials with varying angles of repose. Results indicate a good agreement of the predicted soil surface and strain results with experimental and numerical data. |
| title | A two-phase Volume of Fluid approach to model rigid-perfectly plastic granular materials |
| topic | Fluid Dynamics Discrete Mathematics Geophysics 76-02 |
| url | https://arxiv.org/abs/2402.00415 |