CLUMPING MULTIPLE SPHERES TOGETHER TO FORM ROD SHAPE PARTICLE

Submitted by kashif saeed on Sun, 02/12/2017 - 11:41

Hi ,
I am trying to set up a simulation with multiple spheres clumped together to form rod shape particle.
As I am still very new in LIGGGHTS, I am having dificulties in doing this simulation.

Can someone share example solved exactly as seen in LIGGGHTS Features > Non-spherical particles > Example - pouring a continuous stream of non-spherical particles, where can be seen particles made of 3 spheres stick together.

Thanks in advance.
Kashif

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j-kerbl's picture

j-kerbl | Mon, 02/13/2017 - 16:39

Hi Kashif,

as a starting point I'd like to point out "spheres" keyword of http://www.cfdem.com/media/DEM/docu/fix_particletemplate_multisphere.html .
As you can see, you can define the sphere locations within a clump by defining their relative position to the clump centre with x/y/z coordinates and the sphere radius.
So you'd probably want something like

-0.0007 0. 0. 0.0005
0. 0. 0. 0.0005
0.0007 0. 0. 0.0005

As data file.
Which results in 3 particles along the x axis with radii of 0.0005 m.
Of course you'll also need a fix insert/stream to have continuous insertion.

Cheers,
Josef