Import STL wall in CFD-DEM

Submitted by shokeyi on Sat, 10/19/2013 - 17:24

Hello everyone,

I met an error as "Cannot open mesh file ..DEM/b1.stl (input_mesh_tri.cpp:78)" when I run with "bash Allrun.sh". There is a stl file named as b1 in that package and it could run just with DEM. The code I used for importing wall is "fix cad1 all mesh/surface file ..DEM/b1.stl type 2". Is there anything I used to run the test? Does anyone met this error before? Thanks for any recommendation.

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alice's picture

alice | Tue, 10/22/2013 - 08:51

Hello shokeyi,
in case you didn't only forget the "/" in this posting I'd say it's a small typo ("../DEM/b1.stl").
The rest of the line seems fine to me.
Cheers,
Alice

shokeyi | Fri, 10/25/2013 - 17:33

Hi Alice,

Thanks, it could import wall now. However, when I run test, there is an error during coupling stage as
"Starting time loop

Time = 0.001

Courant Number mean: 0 max: 0
Starting up LIGGGHTS
Executing command: 'run 100 '
Setting up run ...
Memory usage per processor = 160.995 Mbytes
Step Temp E_pair E_mol TotEng Press Volume
2 1.3132225e+09 0 0 2.946362e-09 1.1865076e-08 0.16554814
CFD Coupling established at step 10
CFD Coupling established at step 20
CFD Coupling established at step 30
CFD Coupling established at step 40
CFD Coupling established at step 50
CFD Coupling established at step 60
CFD Coupling established at step 70
CFD Coupling established at step 80
CFD Coupling established at step 90
ERROR on proc 0: Substitution for illegal variable (input.cpp:410)". The source code for that erroe happens as "value == NULL", Is this related to any value lost for defining in DEM? Thanks in advance.

Shokeyi

alice's picture

alice | Mon, 10/28/2013 - 09:03

Hello Shokeyi,
Usually the error message "substitution for illegal variable" indicates than an undefined variable had been used. In most cases this happeens due to a typo in the definition or application of the variable.
Cheers, alice