[nbyjn]

Hello foamers,

As shown in the attachment, if there is a cube cavity with air inside, and there are four inlets at the top of the cube. Then the four inlets begin to inject the same kind of liquid (e.g. water) into the cavity.

How can I mark the inlet information easily? That is, the water injected into inlet1 is marked as 1 (or anything else), the water injected into inlet2 is marked as 2, and so on. (No need to consider the mixing of liquids, just simulate a short period of time and stop before mixing)

Can this be accomplished by scalartransport object?（maybe more than four inlets）

Thank you for any advise!

[yeharav]

I think the scalar transport function object is a good start.

look here :
OpenFoam - concentration - variable for specie

[nbyjn]

Originally Posted by yeharav

I think the scalar transport function object is a good start.

look here :
OpenFoam - concentration - variable for specie

Hi yeharav, thank you so much! I will try the scalartransport function.

I have another question: are there any limits to the value of scalartransport function? Can I set the initial value of the four inlets as 1,2,3 and 4?

Looking forward to your reply!

[yeharav]

Hi,

I never tried, but I think it should. Don't forget to add to field name like so
functions
{
scalar1
{
type scalarTransport;
libs (solverFunctionObjects);

resetOnStartUp no;
region cabin;
field H2O;


fvOptions



{
...
}
}
}

See https://github.com/OpenFOAM/OpenFOAM...larTransport.H
or any documentation for details.