Exporting Residual Information

March 11, 2009, 14:23

This might be a simple question, but is there anyway that I can write my residual information to an output file?

fuxx · July 7, 2011, 07:48

I've got the same question and didn't find any solution yet...is there anyone who could help?
i would like to write my residuals into a csv file

Laci · July 25, 2011, 08:55

I have the same question. How could I export the residuals into data etc. file?
Thx in advance.

coglione · July 26, 2011, 08:42

There is a text command: /plot/residuals-set> plot-to-file which may do what you want. As far as i remember it writes the stored residual data in a file.

cheers

Laci · July 27, 2011, 09:15

Quote:

Originally Posted by coglione

There is a text command: /plot/residuals-set> plot-to-file which may do what you want. As far as i remember it writes the stored residual data in a file.

cheers

Thank you!

stuart23 · July 30, 2011, 03:52

If you want to output the residuals to a file WHILE the solution is running (ie at the end of each iteration,look at this post: http://www.cfd-online.com/Forums/flu...ge-fluent.html

macfly · November 29, 2016, 13:08

Quote:

Originally Posted by coglione

There is a text command: /plot/residuals-set> plot-to-file which may do what you want. As far as i remember it writes the stored residual data in a file.

I'm using Ansys 17.0 and /plot/residuals-set/plot-to-file doesn't work. It generates an empty file, even if I save cell residuals (/solve/set/exp... Save cell residuals for post-processing? [yes]). What am I missing??

I know about this method: http://www.cfd-online.com/Forums/flu...tml#post145582 but it adds a lot of output activity and slows down my simulations which are already time consuming.

Thanks

lukasf · November 13, 2020, 09:28

Hi guys,

I also get an empty file if I use

/plot/residuals-set> plot-to-file

anyone know hows to fix this?

Best regards,

Lukas

Hansbeda · April 7, 2021, 08:40

Hello!

Let me refer you to my post in the ANSYS student forum:

https://forum.ansys.com/discussion/7...in-text-format

In short this is the solution that I came up with:

1. Complete simulation
2. Execute the TUI command /plot/residuals-set/plot-to-file "filename.txt" (will be empty initially)
3. Add one iteration, for example with the TUI command it 1 (if you have a transient case, this will not advance the time step
4. After the additional iteration, open the file specified before

cgriffin33 · April 20, 2021, 16:31

When running on a cluster I always write whatever would be in the command window to an output file. This includes the residuals if you are printing them to the screen. I created a simple matlab file to parse that outfile for the residual information. If anyone is interested let me know. I currently have it specific for the 3D k-omega turbulence model, but a little manipulation should make it work for any type of run.

dewey · April 6, 2022, 21:37

I am interested. Could you share your script?

Quote:

Originally Posted by cgriffin33

When running on a cluster I always write whatever would be in the command window to an output file. This includes the residuals if you are printing them to the screen. I created a simple matlab file to parse that outfile for the residual information. If anyone is interested let me know. I currently have it specific for the 3D k-omega turbulence model, but a little manipulation should make it work for any type of run.

cgriffin33 · April 7, 2022, 10:07

https://github.com/cgriffin33/Matlab...ParseOutfile.m

March 11, 2009, 14:23	Exporting Residual Information	#1
Forrest Guest Posts: n/a	This might be a simple question, but is there anyway that I can write my residual information to an output file?

April 7, 2022, 10:07		#12
cgriffin33 New Member Chris Griffin Join Date: Mar 2011 Posts: 9 Rep Power: 15	https://github.com/cgriffin33/Matlab...ParseOutfile.m Edee likes this.

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July 7, 2011, 07:48		#2
fuxx New Member Join Date: May 2011 Posts: 1 Rep Power: 0	I've got the same question and didn't find any solution yet...is there anyone who could help? i would like to write my residuals into a csv file

July 25, 2011, 08:55		#3
Laci Member anonym Join Date: Mar 2009 Posts: 65 Rep Power: 17	I have the same question. How could I export the residuals into data etc. file? Thx in advance.

July 26, 2011, 08:42		#4
coglione Senior Member Max Join Date: Mar 2009 Posts: 133 Rep Power: 17	There is a text command: /plot/residuals-set> plot-to-file which may do what you want. As far as i remember it writes the stored residual data in a file. cheers

July 30, 2011, 03:52		#6
stuart23 Senior Member Stuart Buckingham Join Date: May 2010 Location: United Kingdom Posts: 267 Rep Power: 26	If you want to output the residuals to a file WHILE the solution is running (ie at the end of each iteration,look at this post: http://www.cfd-online.com/Forums/flu...ge-fluent.html

November 13, 2020, 09:28		#8
lukasf Senior Member Lukas Fischer Join Date: May 2018 Location: Germany, Munich Posts: 117 Rep Power: 8	Hi guys, I also get an empty file if I use /plot/residuals-set> plot-to-file anyone know hows to fix this? Best regards, Lukas

April 7, 2021, 08:40		#9
Hansbeda New Member Johannes Brozovsky Join Date: Jan 2019 Location: Trondheim, Norway Posts: 1 Rep Power: 0	Hello! Let me refer you to my post in the ANSYS student forum: https://forum.ansys.com/discussion/7...in-text-format In short this is the solution that I came up with: 1. Complete simulation 2. Execute the TUI command /plot/residuals-set/plot-to-file "filename.txt" (will be empty initially) 3. Add one iteration, for example with the TUI command it 1 (if you have a transient case, this will not advance the time step 4. After the additional iteration, open the file specified before

April 20, 2021, 16:31		#10
cgriffin33 New Member Chris Griffin Join Date: Mar 2011 Posts: 9 Rep Power: 15	When running on a cluster I always write whatever would be in the command window to an output file. This includes the residuals if you are printing them to the screen. I created a simple matlab file to parse that outfile for the residual information. If anyone is interested let me know. I currently have it specific for the 3D k-omega turbulence model, but a little manipulation should make it work for any type of run.