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  • Accepted Manuscript: Continuum modeling of rate-dependent granular flows in SPH

Title: Continuum modeling of rate-dependent granular flows in SPH

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.
Authors:
 [1] ;  [2]
+ Show Author Affiliations
  1. California Inst. of Technology (CalTech), Pasadena, CA (United States). Division of Engineering and Applied Sciences
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Report Number(s):
LLNL-JRNL-692800
Journal ID: ISSN 2196-4378
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Computational Particle Mechanics
Additional Journal Information:
Journal Volume: 4; Journal Issue: 1; Journal ID: ISSN 2196-4378
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 58 GEOSCIENCES
OSTI Identifier:
1406446