[hsieh]

Hi, OpenFOAMers:

After completing a OF run. I ran foamToVTK to convert the transient data (time 0, 0.01, 0.02, 0.03,...) to VTK. In VTK folder, I saw something like:

casename_0.vtk
casename_1.vtk
casename_108.vtk
casename_209.vtk
casename_310.vtk
casename_411.vtk
casename_512.vtk

Why the numbers jumpped by 101 starting from 108?
How can I output the file with continuous number?

Thanks!

Pei

[shivasub]

Pei,

The reason for this is that while outputting the vtk files, the function runTime.timeIndex() is used for obtaining the filename. here is the snippet of code from foamToVTK

// Create file and write header
//
fileName vtkFileName
(
fvPath/vtkName
+ "_"
+ name(runTime.timeIndex())
+ ".vtk"
);


you can write a small bash/tcsh script to rename the files to get continuous numbers. here is a sample script.



#!/bin/bash
#enumerates and renumbers files

num=0

for file in $1_?.vtk;do let num++;name=$1_`echo $num`.vtk; mv $file $name;done
for file in $1_??.vtk;do let num++;name=$1_`echo $num`.vtk; mv $file $name;done
for file in $1_???.vtk;do let num++;name=$1_`echo $num`.vtk; mv $file $name;done
for file in $1_????.vtk;do let num++;name=$1_`echo $num`.vtk; mv $file $name;done
for file in $1_?????.vtk;do let num++;name=$1_`echo $num`.vtk; mv $file $name;done


Cheers
Shiva

[hsieh]

Thanks a lot Shiva!

Your script works great!

Pei

[mattijs]

The 1.4.1 foamToVTK still creates files from time index. The advantage is that there is a one-to-one correspondence to the absolute time. Disadvantage is that the non-consecutive filenames aren't recognized by Paraview as a time series.

The 1.4.2 instead outputs consecutively numbered files.

[xiao]

Anybody knows why there is

casename_0.vtk
casename_1.vtk

in the folder? I am using OF 1.4.1, In my case, casename_0.vtk is very short with no field information at all. This causes paraview 3.4 to ignore all the fields in vtk files which are not present in casename_0.vtk.

----------------
time cases: 0, 0.2, 0.4, 0.6, 0.8

VTK names:

meshPar2_0.vtk ***
meshPar2_1.vtk ***
meshPar2_20.vtk
meshPar2_40.vtk
meshPar2_60.vtk
meshPar2_80.vtk

[cfdrogu]

For later versions of openfoam (I've only checked for 7+, 2000+), just use the flag "-useTimeName" and it will name the VTK files properly.