[mkjmalik]

Thanks foe your quick reply..

You mean i can copy my previous file and then i can add this to my new generated log file for plotting?

[cdegroot]

Originally Posted by mkjmalik

Thanks foe your quick reply..

You mean i can copy my previous file and then i can add this to my new generated log file for plotting?

Your original question did not mention that you were using the log file for plotting, so I didn't consider this. Probably what you can do is what I said and then combine the two files in sequence using the "cat" command in the terminal.

[mkjmalik]

Sorry for this I’m actually a newbie..

I will use cat command after my simulation ends?

[cdegroot]

Originally Posted by mkjmalik

Sorry for this I’m actually a newbie..

I will use cat command after my simulation ends?

If you had two log files, e.g. log0.dat and log1.dat you could do the following to combine them:

cat log0.dat log1.dat > log.dat

This would create a combined log file called log.dat with the contents of both files in sequence. It will work as long as the data you are extracting is assumed to be printed out in sequence. The header information for both simulations will be retained in the combined file.

[mkjmalik]

Thankssss alot..

Can i ask One question about paraview?

[cdegroot]

Originally Posted by mkjmalik

Thankssss alot..

Can i ask One question about paraview?

Yes, but I would suggest posting in the Paraview forum to keep the threads on-topic.

[mkjmalik]

I’ve already posted there, but yet got no reply

[Bodo1993]

Hi, I use openfoam v6. I got the following error when I resume my simulations from the latest time.

[0] --> FOAM FATAL IO ERROR: 
[0] Cannot open file ""
[0] 
[0] file: 
[0] 
[0]     From function static void Foam::fileOperations::masterUncollatedFileOperation::readAndSend(const Foam::fileName&, Foam::IOstream::compressionType, const labelUList&, Foam::PstreamBuffers&)
[0]     in file global/fileOperations/masterUncollatedFileOperation/masterUncollatedFileOperation.C at line 537.
[0] 
FOAM parallel run exiting
[0]

I am wondering if anyone knows where is that file"" and how to fix this error. Just as a note: the simulation works if I resume from one of the early written times. I define my variables in a file and import the variables using the #include "file path"

[AlxB]

Hello,

at the end of a parallel run I get a folder with a calculated solution, saved in a folder renamed 'ss4000' because it was a simpleFoam run up to 4000 iterations. That folder comes from the reconstructParMesh/reconstructPar process.

now I want to re-use it as a new starting point.
there is no more the 'processorsN' parallel folders.
I set 'startFrom/latestTime' in the controlDict.

The issue is that the previously calculated values are not taken in account in the new run, despite the time values looking good.

please, where could I be wrong ?

many thanks in advance

here below the controlDict:

application     simpleFoam;

startFrom       latestTime;

stopAt          endTime;
endTime         4500;
deltaT          1;

writeControl    timeStep;
writeInterval   100;
purgeWrite      1;

writeFormat     binary;
writePrecision  6;
writeCompression off;

timeFormat      general;
timePrecision   6;

runTimeModifiable true;

functions
{
...
}

here below the AllrunRestart4000 I use:

#!/bin/sh
cd ${0%/*} || exit 1    # Run from this directory

# Source tutorial run functions
. $WM_PROJECT_DIR/bin/tools/RunFunctions

cp -r ss4000 4000
# (there is no more '0' folder)

runApplication decomposePar 
runParallel renumberMesh -overwrite
runParallel $(getApplication)
runApplication reconstructParMesh -constant
runApplication reconstructPar -latestTime

here below the start of the simpleFoam log (final Cd at it4000 was 0.43):

(...)
nProcs : 16
(...)
Create time
(...)
Create mesh for time = 4000
(...)
Starting time loop
(...)
Time = 4001

smoothSolver:  Solving for Ux, Initial residual = 0.292026, Final residual = 2.93319e-09, No Iterations 40
smoothSolver:  Solving for Uy, Initial residual = 0.407129, Final residual = 4.11164e-09, No Iterations 40
smoothSolver:  Solving for Uz, Initial residual = 0.38598, Final residual = 4.04993e-09, No Iterations 40
GAMG:  Solving for p, Initial residual = 0.919348, Final residual = 0.00593635, No Iterations 3
time step continuity errors : sum local = 4049.2, global = -2120.98, cumulative = -2120.98
smoothSolver:  Solving for nuTilda, Initial residual = 0.548782, Final residual = 4.7857e-09, No Iterations 36
bounding nuTilda, min: -0.147061 max: 0.201908 average: 0.00515289
ExecutionTime = 25.99 s  ClockTime = 26 s

forceCoeffs forceCoeffs1 execute:
    Coefficients
        Cd       : -3690.34	(pressure: -3685.81	viscous: -4.53403)