16 August 2018
- Last edited 16 August 2018
I don't think additive by default even writes our this command to the ds.dat file. I quickly ran an additive case that I had open and double checked this.
Now the command itself according to the manual is placed when:
You can use this command in the general preprocessor (PREP7) and in the Solution processor to specify the Stefan-Boltzmann constant in analyses using the radiation matrix method or the radiosity solver to model radiation.
So, it is being inputted from somewhere and the manual says that it can be input in one of these ways:
So, please check the possible causes. Note that it will be helpful to open the ds.dat file corresponding to this error file and look for its location. It might give you some insight. I am assuming that since you are using the MovingHeat ACT may be it is placed somewhere in the apdl code used by this extension, check if the inp files that this is using is calling for this command. Are you using the same ACT extension for the simple case as well?
Lastly, if you completely want to eliminate the possibility of your previous ACT doing something here. Go to this folder:
and rename the folder with the version you are using, say, v191, to something else like v191.old. Then relaunch ansys and try again.
Hope this helps.