[swak4Foam] how can write convective BC on outlet in groovyBC?

immortality · July 13, 2013, 09:46

in which part of convective BC there is its formulation and how can apply it in groovyBC?

Bernhard · July 13, 2013, 14:00

There is also an "advective" boundary condition by default. I assume this does exactly what you require.

immortality · July 13, 2013, 17:28

Hi Bernhard
could you please give me some instructions about when these type of boundary conditions are applicable and useful?
are ther useful for unsteady flows?

Bernhard · July 15, 2013, 05:51

Why do you want to use it?

I would use advective BC's at outlet for typical convection-diffusion equations (e.g. concentration transport). Have a look in the .H of the boundary condition, it contains a lot of info about what is actually done. They are certainly useful for unsteady flows.

July 13, 2013, 09:46	how can write convective BC on outlet in groovyBC?	#1
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 27	in which part of convective BC there is its formulation and how can apply it in groovyBC? __________________ Injustice Anywhere is a Threat for Justice Everywhere.Martin Luther King. To Be or Not To Be,Thats the Question! The Only Stupid Question Is the One that Goes Unasked.

July 13, 2013, 17:28		#3
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 27	Hi Bernhard could you please give me some instructions about when these type of boundary conditions are applicable and useful? are ther useful for unsteady flows? __________________ Injustice Anywhere is a Threat for Justice Everywhere.Martin Luther King. To Be or Not To Be,Thats the Question! The Only Stupid Question Is the One that Goes Unasked.

July 15, 2013, 05:51		#4
Bernhard Senior Member Bernhard Join Date: Sep 2009 Location: Delft Posts: 790 Rep Power: 22	Why do you want to use it? I would use advective BC's at outlet for typical convection-diffusion equations (e.g. concentration transport). Have a look in the .H of the boundary condition, it contains a lot of info about what is actually done. They are certainly useful for unsteady flows. immortality and HesamAUT like this.

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July 13, 2013, 14:00		#2
Bernhard Senior Member Bernhard Join Date: Sep 2009 Location: Delft Posts: 790 Rep Power: 22	There is also an "advective" boundary condition by default. I assume this does exactly what you require.