Continuum modeling of rate-dependent granular flows in SPH
- California Inst. of Technology (CalTech), Pasadena, CA (United States). Division of Engineering and Applied Sciences
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
In this paper, we discuss a constitutive law for modeling rate-dependent granular flows that has been implemented in smoothed particle hydrodynamics (SPH). We model granular materials using a viscoplastic constitutive law that produces a Drucker–Prager-like yield condition in the limit of vanishing flow. A friction law for non-steady flows, incorporating rate-dependence and dilation, is derived and implemented within the constitutive law. We compare our SPH simulations with experimental data, demonstrating that they can capture both steady and non-steady dynamic flow behavior, notably including transient column collapse profiles. In conclusion, this technique may therefore be attractive for modeling the time-dependent evolution of natural and industrial flows.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1406446
- Report Number(s):
- LLNL-JRNL-692800
- Journal Information:
- Computational Particle Mechanics, Vol. 4, Issue 1; ISSN 2196-4378
- Country of Publication:
- United States
- Language:
- English
Web of Science
Simulation of quasi-static axisymmetric collapse of granular columns using smoothed particle hydrodynamics and discrete element methods
|
journal | August 2018 |
Smooth particle hydrodynamics studies of wet granular column collapses
|
journal | June 2019 |
The particle finite element method for transient granular material flow: modelling and validation
|
journal | February 2020 |
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