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UDF for drag force

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Old   November 29, 2017, 01:01
Post UDF for drag force
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lilirong
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Dears Members,

Anyone has some experience for writing an UDF to introduce the drag force in a multiphase flow modeled by VOF model enable?

More specified, I simulate the CO2 bubble absorbed in methanol liquid, the CO2 is inlet to the reactor from a hole on the bottom.
my governing equations are continuity and momentum equations for he incompressible two-phase flow as follows:



and now I want to add the drag force source term to the momentum equation with UDF code.

is there anyone can help me? this problem has been bothering me for a long time

Last edited by piaoyangdexue; November 29, 2017 at 23:32. Reason: add several equition pictures to clear my ask for.
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Old   November 3, 2023, 15:11
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Quote:
Originally Posted by piaoyangdexue View Post
Dears Members,

Anyone has some experience for writing an UDF to introduce the drag force in a multiphase flow modeled by VOF model enable?

More specified, I simulate the CO2 bubble absorbed in methanol liquid, the CO2 is inlet to the reactor from a hole on the bottom.
my governing equations are continuity and momentum equations for he incompressible two-phase flow as follows:



and now I want to add the drag force source term to the momentum equation with UDF code.

is there anyone can help me? this problem has been bothering me for a long time
hello, did you solve the problem?
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