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number of contact for particles with the same size

Asked by reza

Hi guys
I have a binary mixture with two sizes (for example 4 mm and 1 mm). I want to know the number of contacts between spheres with size of 4mm by themselves. So, does anybody have an idea how to do that?

Thanks.

Reza.

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Jérôme Duriez
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Best Jérôme Duriez (jduriez) said : 		#1

Hello,

I guess there indeed is no built-in function that would do that, but it is quite easy to do the job oneself:

nCont = 0
for i in O.interactions:
    b1 = O.bodies[i.id1]
    b2 = O.bodies[i.id2]
    if b1.shape.radius == 4mm and b2.shape.radius == 4mm: # obviously "mm" is not to be typed here, use the correct numerical value for your model. You may also need to add another test to disregard non-spherical particles, if any.
          nCont+=1

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reza (mrp325) said : 		#2

Thanks Jérôme Duriez, that solved my question.