Learning Forum

[cma6301]

Hello,

 

I want to see the effect of density change in my simulation as the simulation is running. Is it possible to write a script in Rocky that can do this? I want to see the change in  behavior of particle in my system as the density increases.

Thanks with regards,

 

Ayuk

[Lucas Bertollo Baggio]

Hello, 

 

What density change do you want to analyze? Particle's density change? 

How is density increasing?! 

 

 

[cma6301]

In wet grinding there is a point when the content of the mill become sticky. But before this point the density of the content changes are the mineral become fine. I want to mimic this phenomenon in the simulation. Reasons why I need to change the density of the content in the simulation if that is obtainable.

 

Best regards,

 

Ayuk

[Lucas Bertollo Baggio]

Ayuk, 

 

Are you simulatin DEM-SPH? or DEM-only?

You can check the particle's density or SPH element's density by accessing the Properties tab on the Data Editors and plotting Density in a Time Plot. 

 

 

[cma6301]

Hello Lucas,

Thank yo so much for the quick response,

 

I am simulating DEM-SPH.

Best regards,

Ayuk

[cma6301]

Hello Lucas,

I cheeked the SPH element's density and I plotted it aganist time. However,  the graph shows a constant density throughout the entire simulation. I am expecting to see the density increasing then form a plateu at some point.

 

Back to my question

Is it possible in Rocky to model the SPH density such that it a constant say 10kg/m3 at t=0s and increase to say 400kg/m3 and for a plateu at some point and it continue being at that constant value for the rest of the simulation time?

 

[Lucas Bertollo Baggio]

Ayuk, our SPH models are "Weakly Compressible (WCSPH)" or "Incompressible (IISPH)", so density oscillations are not expected.

I can't see how the density would vary this much. Are you using any custom module?