How to get TRASYS to Run?
If a TRASYS error was reported or when launching TRASYS from within TAS the DOS window closes very quickly and a BCD results file was not generated, go through the following steps in order to find the problem.
1) Did you install the TRASYS software? It was supplied on a separate disk.
2) Are you running Windows NT? If you are then the CONFIG.NT file located must be changed. It is located in your WIN_NT/System directory. Open the file in a text editor. Go to the bottom and located the line that begins with "Files=". Change it to "Files=50". Save and restart the system.
3) When you ran TRASYS did you run it from the directory where TRASYS is located. If you didn't then the computer doesn't know where to find it. When running TRASYS within TAS, select the button to the right of the TRASYS File Name edit box and navigate to the TRASYS directory.
4) When you entered a TRASYS INP file name was it eight characters or less with no spaces or extended characters? TRASYS is a DOS program so therefore requires a DOS file name.
5) Copy the file KILN.INP from your TAS/Examples directory to the TRASYS directory. Open a DOS window and change to the TRASYS directory. At the DOS prompt, type "trasys kiln". Did TRASYS appear to run correctly? Was a file with the name "kiln.bcd" generated?
5.1) Make sure that steps 1 through 4 were performed. If they were then there is some other problem with the model.
5.2) Are there any plate or brick elements with a zero length dimension. This can happen if the equivalence tolerance was too large. Run the Solve>Check Model to see if there are any problems with the model.
5.3) Open the TRASYS INP file generated for your model into an editor, it is a text file. Go to the bottom of the file then go back up about 15 lines.
5.3.1) On the line "SURFN = ", is the value greater than 1300? The precompiler version of TRASYS can only handle 1300 surfaces. Reduce the numberof radiating surfaces in your model. Try to run TRASYS on part of your model. Remember, 1300 radiating surfaces can generate as many as 800,000 radiation elements in TAS.
5.3.2) Does the line "HEADER OPERATIONS DATA" come right after the line HEADER SURFACE DATA"? If so then there are no radiating surfaces in the TRASYS file. Did you remember to define emissivity values in the property tables referenced by the plate, brick and tetrahedron elements? Go to Information>Model>Entire to make sure that you have defined some radiating surfaces.
5.4) Is the width of a surface in your model less than a value of 0.01. There is code in TRASYS terminating the solution if any dimension is smaller than 0.01. If this is true the only solution is to delete those elements as radiating surfaces or change the units of length in your model. Use the Edit>Scale feature to do so. Remember to change your thermal properties.
If no then recheck steps 1 through 4.