simulation interrupt and restart

Submitted by openfoam on Sat, 03/30/2013 - 16:56

My case computation takes a lot of time. So I want to kown, If I interrupt the calculation, how to save the results, including CFD and DEM sides, and next time I can continue to compute using the previous calculation results as initial conditions.

Forums:

cgoniva's picture

cgoniva | Mon, 04/08/2013 - 18:32

Hi ,

please have a look at the example ErgunTestMPI_restart. This exactly covers all steps necessary.

Cheers,
Chris

openfoam | Tue, 04/09/2013 - 03:17

Thanks, I got it. Bubbles injected into the reactor, they did not rise if I add the drag force on the bubbles, but they can lift up if I only choose the gradp force and viscous force model, so I guess, at the start of calculation the pressure gradient of the liquid flow field is 0, therefore the buoyancy of air bubbles is 0, but the drag force is not 0, then the bubbles can not lift up. I can not find out the problem.

cgoniva's picture

cgoniva | Wed, 04/17/2013 - 14:59

I guess your solver does not cover the effect of hydrostatic pressure rise with depth - so gradP will not give a buoyancy.

Try to use equation type B (with Archimedes instead of gradP and viscousForce)

Cheers,
Chris