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

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Old   November 18, 2019, 10:50
Default Air rising in pipe (need to add second air at a later time)
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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.

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Old   November 19, 2019, 14:59
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