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Simulation of an avalanche in a fluid with a soft-sphere / immersed boundary method including a lubrication force

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Academic year: 2021

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Figure 1: Sketch of a typical particle-particle collision and notations used in the  soft-sphere approach.
Figure 2: Time evolution of the particle velocity: —, present IBM method, - - -, boundary- boundary-fitted approach [12],  , analytical solutions (20)-(21)
Figure 3:   2 as a function of   1 in the case of dry binary collisions. O: experiments of [8]; + present soft sphere method.
Figure 4: Soft-sphere simulation. (a) Silo filling with 56000 particles colorized by their velocity (blue: low velocity, red: high velocity)
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