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polynomial BC from 3d vector data

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Old   March 30, 2015, 08:48
Default polynomial BC from 3d vector data
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Hi guys!

I would like to import approximated polynomial velocity field (polynomial function with factors) from stereoscopic piv measurements. I want to use this velocity distribution as an inlet BC to test simulation performance for swirling flow. Is there a possibility to adress every velocity component with a 2d polynom fit function separately?

e.g. like that

x = x-coordinate
y = y-coordinate
component is scalar value of polynomial fit

component = c1+c2*y+c3*x+c4*y^2+c5*x*y+c6*x^2;

If seen the following in the documentation for polynomial fitting in 1d but i need help to adapt this to a 3d problem:

uniformValue polynomial // y = 0.1 + 1.3x^2 + 2.7x^3
(0.1 0)
(1.3 2.0)
(2.7 3.0)

Thanks in advance for your help!
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3d data, polynomial bc

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