Air rising in pipe (need to add second air at a later time)

hameli · November 18, 2019, 11:50

Hi all,

I am simulation air rising in a pipe using starccm+. So, the pipe has outlet and all around is wall. So, I initialized the domain as attached, and then based on gravity, air moves up and bubble form. Actually, after a couple of seconds, I want to again add air to the bottom of pipe, but I really don't know how to do it. I would really appreciate your help. Just to mention that I added air at first place using user function and it is an initial condition. I mean that it is not a boundary condition, so I can make it function of time.

Thanks

cwl · November 19, 2019, 15:59

You can read how to do that in User Guide, in Field Functions section for example.

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November 19, 2019, 15:59		#2
cwl Senior Member Chaotic Water Join Date: Jul 2012 Location: Elgrin Fau Posts: 437 Rep Power: 18	You can read how to do that in User Guide, in Field Functions section for example.