SPH+DEM Capability

The challenge

Nueva Guinea Modelling of multiphase flow of fluid and discrete particles is challenging. Traditionally this has typically been achieved through the use of coupled eulerian fields (CFD) and discrete particles (DEM), whereby the DEM solver provides particle position, velocity, and cell voiding information to the CFD solver, which in turn provides particle forcing to the DEM solver. And traditionally this has been a computationally intensive approach with long solutions times. EPPIC couples two lagrangian based methods (SPH and DEM) to achieve useful results in a useful timeframe, and it can achieve this with arbitrarily moving geometry for good measure.

Feed boxes

Vibrating screens are used in the mineral processing industry to sieve coarse from fine particles, usually in wet (slurry) feed. Feed boxes typically receive the wet feed from one or more pipes and must distribute it onto the screen in a uniform fashion with low on-screen velocities. Here is an example of how not to do it!
 

Pneumatic/hydraulic conveying

Two phase flow of fluid and discrete particles can cause issues in pipe with sanding out at elbows and other pipe transitions:
 

Wet grinding

Some comminution circuits work with a wet process, and the water within the mill significantly changes the internal flow pattern.
 

 
And EPPIC can also run coupled DEM+SPH with polyhedral particles as well.
 

The potential applications of coupled SPH+DEM modelling are very broad. For more information regarding the suitability of EPPIC to your application please feel free to email site de rencontre antillais en france gratuit info@simphysics.com.au