Discrete element method: Difference between revisions

Revision as of 15:26, 15 December 2021

Revision as of 15:26, 15 December 2021

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* the [[fast multipole method]].

==DiscreteCombined finite-discrete element method combined with other methods==

===FEM-DEM===

Following the work by Munjiza and Owen, the combined finite-discrete element method has been further developed to various irregular and deformable particles in many applications including pharmaceutical tableting,<ref>{{Cite journal |last1=Lewis |first1=R. W. |last2=Gethin |first2=D. T. |last3=Yang |first3=X. S. |last4=Rowe |first4=R. C. |title=A combined finite-discrete element method for simulating pharmaceutical powder tableting |doi=10.1002/nme.1287 |journal=International Journal for Numerical Methods in Engineering |volume=62 |issue=7 |pages=853 |year=2005|bibcode = 2005IJNME..62..853L |arxiv=0706.4406 }}</ref> packaging and flow simulations,<ref>{{Cite journal |last1=Gethin |first1=D. T. |last2=Yang |first2=X. S. |last3=Lewis |first3=R. W. |doi=10.1016/j.cma.2005.10.025 |title=A two dimensional combined discrete and finite element scheme for simulating the flow and compaction of systems comprising irregular particulates |journal=Computer Methods in Applied Mechanics and Engineering |volume=195 |issue=41–43 |pages=5552 |year=2006 |bibcode = 2006CMAME.195.5552G }}</ref> and impact analysis.<ref>{{Cite journal |last1=Chen |first1=Y. |last2=May |first2=I. M. |doi=10.1680/stbu.2009.162.1.45 |title=Reinforced concrete members under drop-weight impacts |journal=Proceedings of the ICE - Structures and Buildings |volume=162 |pages=45–56 |year=2009 }}</ref>

===CFD-DEM===

DEM can also be used with computational fluid dynamics (CFD) to simulate particles suspended in a fluid. This approach is called [[CFD-DEM]]. This methodology takes into account the interaction between the particles and the fluid, where the momentum of the fluid applies forces to the particles, which change position and velocity, in turn affecting the fluid.<ref>{{cite journal |last1=Goniva |first1=Christoph |last2=Kloss |first2=Christoph |last3=Deen |first3=Niels G. |last4=Kuipers |first4=Johannes A. M. |last5=Pirker |first5=Stefan |year=2012 |date=October 2012 |title=Influence of rolling friction on single spout fluidized bed simulation |url=https://www.sciencedirect.com/science/article/abs/pii/S1674200112001356?via%3Dihub |journal=Particuology |volume=10 |issue=5 |pages=582-591 |doi=10.1016/j.partic.2012.05.002 |access-date=2021-12-15}}</ref>

==Advantages and limitations==