CFDEMSolverIB& momentume exchange

Submitted by xiaobaishu67 on Wed, 09/30/2015 - 01:05

Dear all,
I am trying to simulate a sand and water coupling case with the immersed boundary, when i start with CFDEMSolverIB and set momCoupleModels to be off. It tells me:
update Ksl.internalField()
[0] [1]
[1]
[1] --> FOAM FATAL ERROR: [2]
[2]
[2] --> FOAM FATAL ERROR:
[2] the solver calls for impMomSource()
, please set 'momCoupleModel' to type 'implicitCouple'
[2]
[2]
FOAM parallel run aborting

when i change momCoupleModels to be implicitCouple, I can run one step for CFD and one step for DEM then it stops.
Can anybody tell me why?
Thanks in advance!!

Best wises
xiaobaishu67