Gravitational collapse of rectangular granular piles

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Proceedings titleProceedings of the 2012 COMSOL Conference
ConferenceCOMSOL Conference, Oct. 3-5, 2012, Boston, MA
Subjectgravitational collapse; granular pile; two-phase flow; von Mises yield function; Mohr-Coulomb yield surface; CFD
AbstractIn this study, the dam-break type two-dimensional gravitational collapse of rectangular granular piles in air was numerically studied. The frictional behavior of the material was based on the von Mises model with the Mohr-Coulomb yield surface leading to pressure and strain-rate-dependence of shear viscosity. The governing equations of the problem were solved using the COMSOL two-phase flow CFD Module with the level-set method used for accurate tracking of interfaces. This model successfully captured the stable heaps formed at the end of the collapse. The evolutions of shape and velocity field for collapsing piles of two different initial pile orientations (aspect ratios) were investigated. The comparison of the final shapes of the collapsed piles was in accordance with the experimental measurements available in the literature.
Publication date
AffiliationNational Research Council Canada; Ocean, Coastal and River Engineering
Peer reviewedYes
NPARC number21268635
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Record identifier20ce5354-886a-45ef-88f5-a23877256ecc
Record created2013-11-05
Record modified2016-05-09
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