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Export data and load it in inlet

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Old   August 14, 2014, 05:22
Default Export data and load it in inlet
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Hello all !

In order to put a turbulent inflow in my case (double tee junction), i would like to export velocity data from a pre-compute case (simple pipe) and put it for the inlet BC.

To export U, i use sample with a sampleDict. First of all, it writes 2 times more cells (5400 instead of 2700), and same values 2 by 2, like if the cell was split (paraFOAM shows the 2700 cells split in two).

(0.00282895 0.00289232 0.0437824)
(0.00282895 0.00289232 0.0437824)
(0.00251195 0.00263565 0.043842)
(0.00251195 0.00263565 0.043842)
(0.00216303 0.00248173 0.0438021)
(0.00216303 0.00248173 0.0438021) ...

If i try to put these values in the inlet BC (taking only half of the values), with :
Type fixedValue;
value nonuniform;

OpenFOAM takes the values but not in the right order. I think OpenFOAM writes data in a sprecific order but read them in an other. I join screenshots of what i want to get and what i actually have.

Any advices, solutions ?
Attached Images
File Type: jpg inlet.jpg (85.3 KB, 4 views)
File Type: jpg sample_data.jpg (81.9 KB, 4 views)
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Old   August 20, 2014, 05:15
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Unless i missed something, it seems that OpenFOAM reads in a way but writes in an other way, depending how the block is defined. In y case it writes in row but reads in column.

So i meshed my simple pipe in a way and my real case in an other and it worked, but it's not a really satisfying method.
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