what does these mean ??(totalpressure and fixedfluxpressure and inletoutlet)

bgane67 · December 22, 2014, 17:26

hi friends
i want to simulate droplet pinch -off
i dont know what does some BC mean and when do we use these BC,for example:

P

inlet
{
type fixedFluxPressuret;
}
outlet
{

type totalPressure;
p0 uniform 0;
U U;
phi phi;
rho rho;
psi none;
gamma 1;
value uniform 0;
}

about U:
outlet
{

type pressureInletOutletVelocity;
value uniform (0 0 0);
}

about alpha

outlet
{

type inletOutlet;
inletValue uniform 0;
value uniform 0;
}

please help me.

fabian_roesler · January 7, 2015, 03:13

Hi

Inside Doxygen you can find modules on several topics like functions, turbulence models, etc.
There is also a module for all boundary conditions available in OpenFOAM:

http://foam.sourceforge.net/docs/cpp/a10586.html

Cheers

Fabian

December 22, 2014, 17:26	what does these mean ??(totalpressure and fixedfluxpressure and inletoutlet)	#1
bgane67 New Member minoominaii Join Date: Nov 2014 Posts: 7 Rep Power: 11	hi friends i want to simulate droplet pinch -off i dont know what does some BC mean and when do we use these BC,for example: P inlet { type fixedFluxPressuret; } outlet { type totalPressure; p0 uniform 0; U U; phi phi; rho rho; psi none; gamma 1; value uniform 0; } about U: outlet { type pressureInletOutletVelocity; value uniform (0 0 0); } about alpha outlet { type inletOutlet; inletValue uniform 0; value uniform 0; } please help me.

January 7, 2015, 03:13		#2
fabian_roesler Senior Member Fabian Roesler Join Date: Mar 2009 Location: Germany Posts: 213 Rep Power: 18	Hi Inside Doxygen you can find modules on several topics like functions, turbulence models, etc. There is also a module for all boundary conditions available in OpenFOAM: http://foam.sourceforge.net/docs/cpp/a10586.html Cheers Fabian