Dear CFDEM enthusiasts,
I am currently running a simulation using the IB solver and I am experiencing very high computation times. Does anybody have experience in using this solver and can maybe tell me if this are usual computing times or if I am doing something wrong?
The simulation is running on 4 cores while the Computer posseses 128 GB of RAM. Around 400 particles are in the system but for 50 particles the simulation does not seem to run faster. I am using 4 cells per particle diameter.
Regarding the output of the simulation, the flow and the particle trajectories seem to be computed quickly. The simulation always freezes for around a minute at the following point:
Total # of neighbors = 178
Ave neighs/atom = 0.445
Neighbor list builds = 0
Dangerous builds = 0
LIGGGHTS finished
=== cfdemCloudIB::getDEMdata() === particle rotation not considered in CFD
nr particles = 400
<< Simulation halts for around a minute >>
evolve done.
DILUPBiCG: Solving for Ux, Initial residual = 0.0027673, Final residual = 3.7178e-06, No Iterations 2
DILUPBiCG: Solving for Uy, Initial residual = 0.0040357, Final residual = 7.1507e-06, No Iterations 2
DILUPBiCG: Solving for Uz, Initial residual = 0.026874, Final residual = 2.4692e-06, No Iterations 3
suppressing ddt(voidfraction)
DICPCG: Solving for p, Initial resi..
Can somebody explain me if this is usual and inevitable, or if I am doing something wrong?
Thanks for your support,
Yannic