Learning Forum

[saherrer]

Hello all,

I have a case of a membrane and cable structure deforming due to the surrounding airflow. Usually the results files merge as a single "file.rst" file during and after the solving process, but this time they are all separated. I want to combine them all to postprocess in ensight so I can effectively map the reaction force at the simple support and animate the deformations.

I really dislike using singular m apdl solver since I can't figure out the exact command process to merge these files. Can anyone help? These are some of the files that are available after the system coupling is finished.

[Ashish Khemka]

By default, the program automatically combines the local results files (for example, JobnameN.RST) upon leaving the solution processor (for example, upon the FINISH command) into a single global results file (Jobname.RST) which can be used in ANSYS postprocessing and I think that you do not see a single result file by the name of Jobname.RST.
You can use the RESCOMBINE command in /POST1 to combine the entire set of results in the database for postprocessing. Then a subsequent RESWRITE command can then be issued to write a global results file for the distributed solution. The following are the steps to use the RESCOMBINE command to combine slave node rst files:
In a new session, copy all the result files and the database file into a different folder then
1. read jobname.db file
2. use the below commands to combine slave node files (say currently 4 slave node files are used)
/post1
rescombine,4,jobname,rst,,,!(RESCOMBINE, NUMFILES, Fname, Ext, Lstep, Sbstep, Fact, KIMG, TIME, ANGLE, NSET, ORDER)
reswrite,newfile!command to generate global rst file.

Please see if this helps.

Regards Ashish Khemka

[saherrer]

Hello Unfortunately, there's no "file.db" file but there is an "file.rdb" file that I managed to open using "Resume From...". I used the commands above but I think it saved only the most recent timestep into one .rst file. How do I do this for a transient case?

[saherrer]

Hello again I really need this solution for a transient case. I would like every timestep from each rst file to merge into one. How can I do that? I am partway there.

[nbernstein]

Hi--I am having this same issue when trying to postprocess a transient case which failed mid-run and did not automatically combine all .rst files into one. Was this above request ever resolved?

[Ashish Khemka]

Hi,

Please search YouTube for a video titled (from SimuTech Group): 

How to Combine Distributed ANSYS Results After Solver Error/Crash

This might be helpful.

 

Regards,

Ashish Khemka