[Jinjolee]

Hi Foamers, I used pimpleFoam to simulate an external flow, then I used the command:

foamMonitor ./postProcessing/forceCoeffs1/0/forceCoeffs.dat

to plot my coefficients.
However, while my coefficient looks fine inside forceCoeffs.dat and log.pimpleFoam, the plot looks absolutely different from the data.
Here is the plot:

It seems all the value lies on the line only at time 0.

May I know how to fix this?

In case you need the whole case, I uploaded to google drive:
https://drive.google.com/open?id=1EO...XIBP5iN33xp3rW

Thank you very much!!

[mzzmrt]

This is an axis scaling issue on the gnuplot script part.


Disable the auto scaling and use a manual one ranging for such as 0 < y < 1 for plotting...

[Jinjolee]

Originally Posted by mzzmrt

This is an axis scaling issue on the gnuplot script part.


Disable the auto scaling and use a manual one ranging for such as 0 < y < 1 for plotting...

May I know how to set the scaling?
I am just simply typing in

foamMontion /.postProcessing/forceCoeffs1/0/forceCoeffs.dat

I am not using any script, so I don't know how to regulate the scaling .. Thanks

[mzzmrt]

I seems you are using a tool named foamMonitor and it uses gnuplot for drawing graphs automatically. I have no idea what foamMonitor is doing anyway so you have dig in the code.
Or you can directly import the *.dat file into any spreadsheet software and draw the graph manually.

[Jinjolee]

Originally Posted by mzzmrt

I seems you are using a tool named foamMonitor and it uses gnuplot for drawing graphs automatically. I have no idea what foamMonitor is doing anyway so you have dig in the code.
Or you can directly import the *.dat file into any spreadsheet software and draw the graph manually.

Thank you. I think it will import it in spreadsheet then.
By the way, may I know if I have to use a script, how should I construct it? Is there any example coding? Thanks a lot!

[mzzmrt]

This kind of scripting is easy. I guess this thread will help:


Tutorial of how to plot residuals !

[Jinjolee]

Originally Posted by mzzmrt

This kind of scripting is easy. I guess this thread will help:


Tutorial of how to plot residuals !

Thanks a lot. I will look into it