How to solve the problem of time_step.f:195

MFiX How to
#1

hello ,everyone !
When I run the mfix-DEM ,I met the following problem .
“ERROR C:\tools\miniconda3\conda-bld\mfix-solver_1556302768954\work\model\time_step.f:195”

  Does it means that the time step is too large?  I  want  to  identify whether I should  use a smaller time step .
 Could anyone help me ? Thanks .
#2

So that is just where the error occurred, are you getting a DT < DT_MIN?

#3

yeah , that’s it . I met " DT < DT_MIN "

#4

So that means that the solver is not converging. There could be numerous reasons why this is, poor setup, bad initial condition, … If you can, please post your case.

#5

zudangshi-0314.mfx (16.3 KB)
geometry_0004.STL (10.0 KB)
these are the related documents ,thanks !

#6

Did you solve your problems? I also encounter the error 195.

#7

So that is just where the error occurred，if you get a DT < DT_MIN , that means that the solver is not converging. There could be numerous reasons why this is, poor setup, bad initial condition, …

#8

You did not specify initial and boundary condition values for k and epsilon.