Hi,

Can you please help me to generate a UDF that changes the size of two circles that are inside a fluid???

The geometry is an hexagon filled with stagnated water (2d).

Inside the Hexagon there are 2 pipes (circular ones - walls). I would like to increase and decrease their sizes (radio) on time.

It has to increase and decrease periodically, let´s say sinusoidal.

Is it possible to simulate that in Fluent???

I would really appreciate your help.

Best regards

Efra

One way would be to predefine all the zones and change fluid zones to solid zones with time. It would be a step change that you can do either manually or write a journal file to do it.