How can I see the value of van der Waals in every collision?

Unknown

Hello every body,
I am simulating CFD-DEM in a tube by coupling Fluent and EDEM. Van der Waals is the most important force in my case. So I used Hertz-Mindlin-JKR between particles and between particles and wall. I want to ask you, can I see the value of contact and van der Waals forces in each collision?

Regards,
Fatemeh

RWood

Hi,

In EDEM, the JKR model calculates a cohesive force due to the presence of surface energy and adds this to the total force experienced by each particle. The 'Total Force' in the Analyst includes any cohesive force within it but is not available as a separate value. If you want to track the cohesive force or another similar quantity then you would have to add a custom property in an API plugin. 

If you want to do this then you can start from the API version of the model and add a custom property from there:

https://community.altair.com/community?id=kb_article&sysparm_article=KB0113625

Cheers,

Richard

RWood

Richard Wood_20774 said:

Hi,

In EDEM, the JKR model calculates a cohesive force due to the presence of surface energy and adds this to the total force experienced by each particle. The 'Total Force' in the Analyst includes any cohesive force within it but is not available as a separate value. If you want to track the cohesive force or another similar quantity then you would have to add a custom property in an API plugin. 

If you want to do this then you can start from the API version of the model and add a custom property from there:

https://community.altair.com/community?id=kb_article&sysparm_article=KB0113625

Cheers,

Richard

Forgot to say, you can look at the forces in each collision though. If you enable 'Track Collisions' in the Simulator (before running) then you can analyse the forces in each collision in the Analyst.

Richard