Dear all,
I want to apply the "periodic" boundary condition to the existing boundaries along wave propagation direction in a curved cell unit (attached image); However, this boundary condition does not appear to be applicable to curved surfaces, and some changes to the coordinate system used are required.
Unfortunately, I do not know what coordinate system to use and how to use it in "orientation of source".
I would be grateful if someone would help me.
Any help would be extremely appreciated.
Mehran Ebrahimi, I think you should add a new coordinate system, cylindrical one. In Definitions - Coordinate systems - Cylindrical system
Alexey M. Lomonosov Dear Dr. Lomonosov, thanks for your reply.
I have to say that I have used the cylindrical coordinate system before, but I did not get the correct answer because I do not know exactly what settings I should apply to this coordinate system (for example, where exactly to place the origin of the C.S.). In this geometry, the direction of wave propagation is in the x direction, and I have to apply the "periodic" boundary condition to the boundaries in this direction (curved surfaces), but I do not know exactly how this should be included in the settings of the cylindrical coordinate system. You can see the geometry position in the Global Coordinate system as well as the required settings for the Cylindrical Coordinate system in the attached file. I would be grateful if you could help me please.
Sorry, I maybe misunderstood you. The wave propagates in the radial direction? If it is so, I am afraid the periodicity on the cylindrical surfaces cannot be correct. Just because the wave magnitude decreases with radius, so it is smaller at the outer surface.
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