|
[Sponsors] |
October 1, 2011, 19:20 |
Restart FSI run on ANSYS CFX
|
#1 |
Member
Lingdeer
Join Date: Jul 2011
Posts: 49
Rep Power: 15 |
Hi,
I am running simulations with FSI ANSYS CFX. However, my simulation stopped before converging since my cluster job time is exceeded. I have backup file in cfx (.bak). Before I restart it by using continue-from-file .bak and use-mesh-from-iv However the solid seems not to start from the same time point and I need run extra time. I added -ansys-restart "ANSYS.rdb" as instructed in the ansys solver manager documentation, hoping it will start solving the FSI from the point the solution got stopped. However and simulation crashed at restart. Anybody has experience with restarting FSI run? Thanks! |
|
October 4, 2011, 15:24 |
|
#2 |
Senior Member
Edmund Singer P.E.
Join Date: Aug 2010
Location: Minneapolis, MN
Posts: 511
Rep Power: 21 |
In order to a restart, you need to have a common point from both CFX and Ansys. I am not familiar with running through WB but FSI running through ANSYS as the controller, if you had MFRC setup to a mulitple of MTOUTPUT, which CFX is configured to output full backup files at the same frequency, you should be able to restart at the MFRC step.
Files you need to have are *.db, *.r00X, *.rdb, *.ldhi for a multiframe restart, or *.db,*.emat,*.esav/osav for a single frame restart and the CFX *.res file that corresponds to the same output frequency as the ANSYS files. You can then use MFRSTART (ansys command) to issue the restart at the time that you have backups for. |
|
October 10, 2011, 00:10 |
|
#3 |
Member
Lingdeer
Join Date: Jul 2011
Posts: 49
Rep Power: 15 |
Thanks!
I am wondering anything that I set up wrong when I set up the solid and fluid cases. For solid, I did not set any backup results For fluid (CFX), I set "every iteration" or "every coupling step" to backup the fluid file. However it still did not work. Also, what is MFRC command? Where can know more about it and how to use it? Thanks! |
|
October 10, 2011, 10:47 |
|
#4 |
Senior Member
Edmund Singer P.E.
Join Date: Aug 2010
Location: Minneapolis, MN
Posts: 511
Rep Power: 21 |
If you are running through workbench, workbench creates the ansys script file for you based on your inputs. In that script file is the MFX commands needed to run the FSI job. For details on these commands, look at the Mechanical APDL (not CFX) help for MFX.
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Command Line Run for ANSYS | Liaquat | ANSYS | 11 | April 19, 2018 10:49 |
ANSYS and CFX not talking in two-way FSI? | brashear | CFX | 6 | November 25, 2012 09:13 |
Problem with multiframe restart of two-way fsi coupled problem | Dimone | CFX | 26 | December 20, 2011 11:10 |
error in two way fsi | kmgraju | CFX | 1 | May 2, 2011 03:32 |
Exporting results from CFX to ANSYS ?? | sohail ahmed | CFX | 1 | December 20, 2007 02:10 |