[sunilpatil]

Hello Every one,
I am trying to solve a problem having periodic boundary conditions. I am able to generate required mesh and also I have defined periodic condition in FLUENT by text command. my geometry is simple - circular pipe with fins inside and fins are located 120 degree apart. I have take 120 degree section for modelling the flow. My question is,
after modifying the zones as periodic what values we need to specify in periodic condition tab.i.e Flow direction X, Y and Z and upstream bulk temperature.
I have attached relevant figure.

https://s11.postimg.org/nc6dl754j/pe...conditions.jpg

Help me to decide these values

Thank you