yade-users team mailing list archive

[Nicolas Godet <question667236@xxxxxxxxxxxxxxxxxxxxx>]

New question #667236 on Yade:
https://answers.launchpad.net/yade/+question/667236

Dear all,

I still have the desire to model a water-saturated flowing material. The fluid coupling will be too complicated. It requires to modify the C++ code, it is not feasible during my internship.

I turned to frictional viscous law. [1]
To simulate the presence of the fluid between particles, I thought I could use aabbEnlargeFactor and interactionDetectionFactor to create distant interactions between particles.

My question is : What is the behavior of the viscous law (or all other laws) when 2 fictive enlarged particles overlap ? (Like this http://prntscr.com/iwfv1v) 
Does parameters of material/physic/law is proportional to the "overlapping ratio" ? (0 when the distance between particles is > 2 * fictive radius and 1 when their is a real contact between particles)

The fact is I want that the force exert by a particle on the other is proportional to the relative velocity and inversely proportional to the distance between particles.
Repulsive force when 2 particles get closer and "attractive" force when 2 particles recede.
I think I will have to code a Python function to apply this kind of force on each particle.

Regards,
Nicolas

P.S.: Here is my actual code to run some tests : https://pastebin.com/7BNK4KJL

[1] https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.Law2_ScGeom_ViscoFrictPhys_CundallStrack

-- 
You received this question notification because your team yade-users is
an answer contact for Yade.