As subject says, I'm not sure if I'm implementing the "rolling_friction" part of the granular style correctly. I am simply trying to drain particles from a wedge shaped hopper and measure the mass flow rate using different values for friction. However, turning on rolling friction appears to have no effect, nor does changing the values for rolling friction - my mass flow rates are identical to not having rolling friction turned on.
Attached is my script. I think I am implementing the keyword correctly, but my trials leave me puzzled. "liggghts_test" is the script itself, and the other files are the .stl files used by the script. I'm using LIGGGHTS 2.2.
| Attachment | Size |
|---|---|
 liggghts_test_1.txt | 2.42 KB |
| valve_2.txt | 3.25 KB |
| hopper_open_2_2.txt | 10.81 KB |
| hopper_insert_2_2.txt | 580 bytes |
richti83 | Mon, 01/14/2013 - 09:55
you need to add rolling
you need to add rolling_friction cdt to pair_style gran/hertz/history and wall/gran/hertz/history
see LIGGGHTS-PUBLIC/doc/fix_wall_gran.html for details
msandli | Mon, 01/14/2013 - 22:27
That appears to have done the
That appears to have done the trick, thanks!