|June 8, 2012, 05:33||
Strange Experience with DFBI Seakeeping Simulation
Join Date: Apr 2012
Posts: 5Rep Power: 6
Some time ago I had serious problems with my DFBI seakeeping simulation and opened a thread in this forum (http://www.cfd-online.com/Forums/sta...imulation.html).
The help provided there was useful but did not help to completely resolve my problem. In the end I got a similar (working) case from a tutor and compared it to my file. They were identical, except for the mesh and the ship's geometry. Same approach, same settings. Anyway my simulation produced unphysical results.
What saved me in the end?
I wanted to start over again and exported my mesh. I created a new simulation, imported my mesh and set up the properties. In the end I had a new file with the same settings as before.
The weird thing is: It works perfectly!
I compared my files several times: They are identical!
The only difference is: In the first file I created my mesh in Star, in the second file I imported my mesh!
I assume this could be of interest for other users as well, so has anyone a clue what happened?
Last edited by Forbin; June 8, 2012 at 07:14.
|June 10, 2012, 15:04||
Join Date: Oct 2009
Posts: 637Rep Power: 14
Sometimes the sim-file gets messed, although it looks fine. I have absolutely no clue why and how to detect that. But when it happens, it's best to start right from the beginning, like you did.
We do three types of jobs here:
GOOD, FAST AND CHEAP
You may choose any two!
|April 28, 2015, 15:48||
Join Date: Apr 2015
Posts: 2Rep Power: 0
I am running a CFD seakeeping analysis in head waves and experiencing exactly the same problem with increasing free surface and hence wave damping.
I tried exporting and re importing the file without success. any other suggestions that could lead to similar problems?
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