Periodic boundary condition – Fully Developed Flow

- May 3, 2025 at 4:45 pm
  
  Miladfarahi957
  Subscriber
  
  I have heat transfer problem.
  
  My geometry is periodic in the y direction (Translational) and the top curved face is a wall. while the other sides have symmetry boundary conditions.
  
  My question is that does defining a periodic boundary condition ( mass flow rate) means that the flow is considered fully developed?
  
  if not how am I supposed to define it as there are no option to choose the mass flow rate as udf or expression?
  
  Additional Information & Question:
  
  I did the simulation with the following boundary conditions:
  
  The following are the results I got after the simulation:
  Periodic Condition-After- Simulation
  
  Bulk-Temp.
  
  Temp countor on wall:
  
  My BC is static wall temp.! why does BC looks like this. why is it changing. and max temp in my simulation is 50. why do I have 52.6 here?
  
  I don't understand the problem.
  
  Please help.
- May 4, 2025 at 8:34 pm
  
  scabo
  Subscriber
  
  I can tell that if u use periodic BC then it means fully developed flow-i also use the periodic BC along a pipe and i get fully developed flow, but i have no temperature equations.
- May 5, 2025 at 8:57 am
  
  Miladfarahi957
  Subscriber
  
  Thank you. that helps.