Hi, I just want to know if the
 

Hi, I just want to know if there's a way of capturing the log data into spreadsheets like Open Office. I would like to take the information printed on the log file and chart it out you see.

Thanks!

Samuel

Hi Samuel! You'll have to e
 

Hi Samuel!

You'll have to extract the info into CSV-files (or something similar). This is for instance done by the foamLog-Skript described in section 7.6 of the UserGuide or (beware: advertising) by some of the pyFoam-Utilities

Bernhard

Thank you so much Bernhard!I u
 

Thank you so much Bernhard!I understand how to do it now!

Sorry, but I may sound really
 

Sorry, but I may sound really stupid at this point in time..

I tried following the UserGuide section 7.6, but I encountered a problem. I can't seem to execute the foamLog script within OpenFOAM. It says on the UserGuide that I have to type in foamLog <root> <case> <logfile>, but I'm not sure which logFile I'm referring to because I can't find the subdirectory called logs anywhere in OpenFOAM-1.4.1.

Please guide me along.

Thank you,
Samuel

Hello, A log file is create
 

Hello,

A log file is created in the case directory when you execute:

foamJob <solver> <root> <case>


Then you need to execute:

foamLog <root> <case> <logfile>

Oh ok! I get it now! I thought
 

Oh ok! I get it now! I thought the logFile was there all along and when I tried to execute it, I thought the system hung right there! Thank you!

Hello, I get the following
 

Hello,

I get the following log for each time step:

Courant Number mean: 0.0201787 max: 0.264922
deltaT = 0.00473396
Time = 0.0263302

MULES: Solving for gamma
Liquid phase volume fraction = 0.130194 Min(gamma) = -7.81823e-47 Max(gamma) = 1
MULES: Solving for gamma
Liquid phase volume fraction = 0.130194 Min(gamma) = -7.444e-47 Max(gamma) = 1
DICPCG: Solving for pd, Initial residual = 0.0305024, Final residual = 0.000290093, No Iterations 1
DICPCG: Solving for pd, Initial residual = 0.000299968, Final residual = 1.33247e-05, No Iterations 10
DICPCG: Solving for pd, Initial residual = 2.02136e-05, Final residual = 9.3558e-08, No Iterations 36
time step continuity errors : sum local = 5.60007e-07, global = 4.57038e-08, cumulative = 1.23805e-07
Mass of Fluid 1 = 0.646099 kg
ExecutionTime = 0.53 s ClockTime = 1 s


I wish to extract the information for "Liquid phase volume fraction = 0.130194" for each time step from the log file. I tried to use the foamLog script, but this information is particularly missing in the subdirectory log.

Kindly help me.

Regards,

A A Saha.

Hi Saha, and good morning to e
 

Hi Saha, and good morning to everyone

If your log file is called runLog, I would do the following from the command line:

grep -A3 -E "^Time" runLog | grep -v "MULES"

Then you at least have the data written to screen / can redirect it to a file. If you need the data to be plotted using some script, you probably want the data in a tab-separated file, this could be done like this:

grep -A3 -E "^Time" runLog | grep -v "MULES" | sed -e 's/\//'| awk 'BEGIN {RS="T"} {print $3,$9}' > myLiquidFraction

The part sed -e 's/\//' might be omitted, but I got some weird formating, which I removed by that command.

Have funhttp://www.cfd-online.com/OpenFOAM_D...part/happy.gif

- Niels

Alternately locate the file kn
 

Alternately locate the file known as foamLog.db and add an entry for 'Liquid phase...whatever' in it. Now, foamLog can extract that info for you!

Hello Srinath, Thanks for y
 

Hello Srinath,

Thanks for your post. I added the entry in the foamLog.db and the Liquid phase is now available in foamLog.

Thanks,

A A Saha

Hello Niels, Thanks for you
 

Hello Niels,

Thanks for your post. The command line option works great and serves exactly what I was looking for.

I got the following error:

sed: -e expression #1, char 5: unterminated `s' command

Omitting sed -e 's/\//' it workes fine.

Thanks again.


Regards,

A A Saha