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[OpenFOAM] Extracting (U_x) and (U_y) velocities from a specified sub-domain

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Old   January 28, 2024, 10:13
Default Extracting (U_x) and (U_y) velocities from a specified sub-domain
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Nafiz Ahmed Khan
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Hello everyone,

I’ve extracted my u and v component velocities for that specified zone (sub-domain) in the entire domain from the VTK files in Python. Now, I found something unusual: for the same x-grid point, four (4) y-grid points are shown in my extracted data, and their corresponding u and v velocities are also different. For example, (385.875, 406.98), this point appears four times, and their corresponding U_x and U_y velocities are also different. The attached figure from Excel is for reference.

Capture.PNG

Any comment on this?
Are the values of my U_x and U_y cell-centered values or cell-point values? If not, how can I extract the cell-celled values, not the point values?
Thanks in advance
Nafiz
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