UDF for Mesh Motion of MRI Scan Geometry
 

Hello CFDOnline,

I used 3D Slicer to register two different volumes and generate a displacement field with x y and z displacements into an excel file.

I tried to use mechanical to import a displacement load and have been unsuccessful, so I would like to try the UDF approach. I am new to UDF creation, though. I know I will need to use the grid motion macro.

I need to take the current mesh and deform it according to the x y and z displacements in the excel file. How do I import the displacements from the file and how do I know which nodes they map to?

Please advise if you can. Thank you for your time.