|March 8, 2006, 11:04||
Simulation of granular material
I'm trying to simulate the behaviour of granular material, in special the angle of repose. All this with fluent and it's granular models. First, I tried to simulate the formation of a pile of material by dropping dust from above (lake a sand clock) in 2_D and after I tried with a column of this dust collapsing in t=0 and 3-D (like the famous water column collapsing that is used to validate CFD codes) and the results are: the granular material spreads just like a regular fluid and no angle of repose can be seen.
So my doubts are: does this happens because my experiments implicate too much inertial forces and no granular material will form a pile with the correspondent angle of repose?
Or the granular models for simulation in fluent just can't simulate granular flow in such high volume fraction (in this case, volume fraction=packing limit of the material)?
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