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Reading the boundary condition from a file and interpolating it on a cylinder

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Old   August 15, 2022, 11:35
Smile Reading the boundary condition from a file and interpolating it on a cylinder
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Roozbeh Salajeghe
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Hi foamers,

I have a cylinder filled with a fluid partly illuminated by a projector (see the attached schematic). A cylindrical domain and an intensity field are defined to simulate the process. The boundary condition for the intensity field should be made based on the images that the projector produces, and the images change over time. So, the images should be interpolated on part of the circumferential boundary mesh of the cylinder, and they should be updated every few time steps. I have created the necessary text files from the images containing the intensity as a function of coordinates and time so that they can be easily read by OpenFOAM.
I have found that timeVaryingMappedFixedValue may do what I need. However, this boundary condition type uses the MappedFile class which is, in turn, inherited from the pointToPointPlanarInterpolation class that basically works for planar surfaces. It seems that it does not work for my curved (non-planar) boundary.
Do you have any idea of how I can make this boundary condition work for my case? Or do you know any other functionality in OpenFOAM that can help me cope with this problem?

Any help is appreciated.

/Roozbeh
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