In this paper, we propose a combination of discrete elements for the soil and\nfinite elements for the fluid flow field inside the pore space to simulate the\ntriggering of landslides. We give the details for the implementation of third\norder finite elements (â??P2 with bubbleâ?) together with polygonal discrete elements,\nwhich allows the formulation with a minimal number of degrees of\nfreedom to save computer time and memory. We verify the implementation\nwith several standard problems from computational fluid dynamics, as well as\nthe decay of a granular step in a fluid as test case for complex flow.
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