Translational Periodicity

[IanME]

User Base,

I'm using Ansys V13 Mechanical Workbench.

I am attempting to model a cell of a brazed heat exchanger core with multiple layers of fins/tubes for a homogenization analysis. I want to apply a periodic boundary condition on each plane of the 'unit cell' to simulate the periodic nature of the large core. However, ANSYS only allows me to apply a periodic condition in a cylindrical coordinate system, not a Cartesian system as I desire. The core is grid-like in nature. Is it possible to create translational periodicity in ANSYS V13 using a work-around? Can this be accomplished with an APDL script?

I understand that symmetric boundary conditions can be applied in a Cartesian system, but this is not adequate for my analysis. As far as I've found through internet research, Translational Periodicity is only available in Ansys CFX, not Workbench.

Any advice or suggestions would be greatly appreciated. I'd also be willing to supply any more information that is needed (a picture of the core or unit cell, etc.).

Thanks for reading,
-Ian

"All models are wrong, but some are usefull" - George E. P. Box

 

[IanME]

I still have no been able to solve this problem.

Does anyone have experience with the APDL command 'HFARRAY'?

Thanks again...
-Ian

"All models are wrong, but some are usefull" - George E. P. Box

 

[EngTipX]

I just posted

http://www.eng-tips.com/viewthread.cfm?qid=330495

I am having problems simulating a propagating incident wave

 

[EngTipX]

I might have an idea although I do not know how to implement it, "don't know much APDL" you can add a command snippet...I will explain my idea in

http://www.eng-tips.com/viewthread.cfm?qid=330495

since I need to have periodicity as well
I hope it helps