How to create Rotating Frame of Reference?
i am doing CFD analysis of Kaplan Turbine to do that i have to make rotor as rotating body while wall outside the rotor as stationary. i have already made rotor as rotating wall and outside wall as counter rotating wall in no slip default domain but this message keep on showing every time i run execution: plz help!
+--------------------------------------------------------------------+ | ERROR #002100080 has occurred in subroutine CHECK_NORMV. | Message: | The specified velocity vector on the boundary patch | | rotor | | has a significant normal component at one or more faces. One of | these face locations is | | (x,y,z) = ( 1.69413E-01, 1.80352E-01, 4.24567E-01). | | The angle between the specified velocity and the element surface is | 77.622 degrees at this face. This is considered an error because | it implies that the mesh is moving. The following are possible | reasons for the error message: | 1. There is a setup error; for example, an incorrect axis of | rotation. | 2. There may be a meshing problem; for example, the nodes on a | rotating surface might not lie on the surface of revolution. | 3. The boundary is curved and the mesh is very coarse. In this | case, you may modify the tolerance by increasing the | expert parameter 'tangential vector tolerance wall' | from its default of 20 degrees. |
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