[Bodo1993]

Hi,

I use 4 PIMPLE iterations. The pyFoamPlotWatcher shows the residuls of the first PIMPLE iteration only. I am wondering how would I display the last PIMPLE iteration?

Thanks.

[otaolafr]

hello!
i am using ubuntu in a Wls from windows. i can not make work pyFoamPlotWatcher. i have installed already python 3(sudo apt-get install python3), and it does not find the command

pyFoamPlotWatcher.py: command not found

.

any idea? thanks

[PositronCascade]

Hello. Can you verify that PyFoam is installed and works correctly in your system? You can do that by evoking

python

or

python3

interactive shell and

import PyFoam
import PyFoam.FoamInformation
print PyFoam.FoamInformation.foamTutorials()

then it returns this for me, as I have installed Of7 in my system:

/opt/openfoam7/tutorials

If it works for you as well, you just need to go to the folder of log file and call the log file named log1 as

pyFoamPlotWatcher.py log1

I use WSL as well and it works for me.

[otaolafr]

Originally Posted by PositronCascade

Hello. Can you verify that PyFoam is installed and works correctly in your system? You can do that by evoking

python

or

python3

interactive shell and

import PyFoam
import PyFoam.FoamInformation
print PyFoam.FoamInformation.foamTutorials()

then it returns this for me, as I have installed Of7 in my system:

/opt/openfoam7/tutorials

If it works for you as well, you just need to go to the folder of log file and call the log file named log1 as

pyFoamPlotWatcher.py log1

I use WSL as well and it works for me.

hello, well i think i have not PyFoam installed...
already doing python3
and after import PyFoam i get

Python 3.6.9 (default, Apr 18 2020, 01:56:04)
[GCC 8.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import PyFoam
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'PyFoam'

I thought that it was installed already, sorry.... i will have a look.
franco

[PositronCascade]

That's okay. You just need to install it using pip or pip3 whichever you have.

pip3 install PyFoam

Originally Posted by otaolafr

hello, well i think i have not PyFoam installed...
already doing python3
and after import PyFoam i get

Python 3.6.9 (default, Apr 18 2020, 01:56:04)
[GCC 8.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import PyFoam
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'PyFoam'

I thought that it was installed already, sorry.... i will have a look.
franco

[otaolafr]

Originally Posted by PositronCascade

That's okay. You just need to install it using pip or pip3 whichever you have.

pip3 install PyFoam

thanks a lot hasan,
Small (and last, i promise!) question, I am running my simulation from an Allrun file, is it possible to add the pyFoam to the Allrun file? can i run it before running the solver with adding " &"?
or i am obligated each time i run the simulation to open another terminal and do it? (or "run ./Allrun &")
best regards,
franco

[PositronCascade]

Hello, I would rather use RunFunctions if you are on a local computer.

Evoke it by

. $WM_PROJECT_DIR/bin/tools/RunFunctions

Then, you can call the application

runApplication simpleFoam &

or

runParallel simpleFoam &

It will give you a log file called log.simpleFoam. Press enter and you will be back to your terminal then write

pyFoamPlotWatcher.py log.simpleFoam

You can change the application from simpleFoam to anything as you wish.


When you need to kill the application, check top and it will give you PID number of the Openfoam application. Then, write kill PID_number.

Originally Posted by otaolafr

thanks a lot hasan,
Small (and last, i promise!) question, I am running my simulation from an Allrun file, is it possible to add the pyFoam to the Allrun file? can i run it before running the solver with adding " &"?
or i am obligated each time i run the simulation to open another terminal and do it? (or "run ./Allrun &")
best regards,
franco

[otaolafr]

Originally Posted by PositronCascade

Hello, I would rather use RunFunctions if you are on a local computer.

Evoke it by

. $WM_PROJECT_DIR/bin/tools/RunFunctions

Then, you can call the application

runApplication simpleFoam &

or

runParallel simpleFoam &

It will give you a log file called log.simpleFoam. Press enter and you will be back to your terminal then write

pyFoamPlotWatcher.py log.simpleFoam

You can change the application from simpleFoam to anything as you wish.


When you need to kill the application, check top and it will give you PID number of the Openfoam application. Then, write kill PID_number.

hello,
thanks for the answer, yes, it is what i am doing actually using runParallel, my only doubt it was if i used the " &" at the end, it means that it continues running the script at the same time that it runs in this case, simpleFoam, so if there is a line after this that uses the results of simpleFoam it would give an error, no? to be more clear with an easier example:
if i do:

runApplication blockMesh &
runApplication snappyHexMesh

it would create an error, no? as snappy uses the result of the blockMesh and from the script they will run more or less at the same time, no? it was my issue with this, for the case with pyFoamPlotWatcher.py i though maybe do it before running the simpleFoam with runApplication pyFoamPlotWatcher.py &? so this would not be a problem. or I am missing something?
thanks

[OlivierM]

Hello,

I try to plot residuals on the fly using foamMonitor but this fails.
(I'm on OFv2012 Ubuntu 20.04 WSL2)

I run the command below:

$ foamMonitor -l postProcessing/residuals1/0/solverInfo.dat


which returns:

$ foamMonitor: command not found


Does anyone know how to solve this ?

thank you

[OlivierM]

I follow your message. I think I have PyFoam installed as you can see below :

#
$ pip3 install PyFoam
Requirement already satisfied: PyFoam in ./.local/lib/python3.8/site-packages (2020.5)
Requirement already satisfied: numpy in /usr/lib/python3/dist-packages (from PyFoam) (1.17.4)
#

but then there is that error:

#$ import PyFoam
import-im6.q16: unable to open X server `:0' @ error/import.c/ImportImageCommand/359.
#

what could be the issue ?

thanks

[kaizer]

Greetings!

I would like to revive this thread by saying that the code for residuals stated above does not output the final residuals, only the initial residuals. Does anyone have a fix for this?

If it helps, I am running it on OpenFOAM.org v9.

Cheers,
King