Does Liggghts support inserting particle during CFD-DEM coupling?

Hi Chris,

My question is pretty much same as the title. To explain in more detail (please also take a look at this post: http://cfdem.dcs-computing.com/?q=node/1745 ), the following command is used to insert particle steam:

fix ins nve_group insert/stream seed 5330 distributiontemplate pdd1 &
nparticles 20000 particlerate 8000 overlapcheck yes vel constant 0.0 5.0 0.0 &
insertion_face inface extrude_length 0.02


Without coupling, it works fine with pure DEM test, but when doing CFD-DEM coupling (cfdemSolverPiso), it complains:
ERROR: Fix insert/stream (id ins): unknown keyword or wrong keyword order (fix_insert_stream.cpp:107)

I tried many combinations of input parameter with "fix insert/stream" and worked well in Liggghts, but it always shows the same erros during CFD-DEM coupling, this issue is really annoying.

So I wonder if cfdemSolverPiso changes some input parameters of "fix insert/stream" implicitly. If yes, what parameters have been changed?

best,

Daivd Long