[vineet_bhola]

I am testing a compressible pipe flow and used reference values from rhoSimplecFoam tutorial and for pressure inlet patch I came across "mixed" patch type. I did not understand that so i used zeroGradient instead. But then the solution diverged.
But now when I use mixed patch it looks much better. But the problem is I do not know what does these values really represent and what does mixed patch signify.

inlet
{
//type zeroGradient;
type mixed;
refValue uniform 110000;
refGradient uniform 0;
valueFraction uniform 0.3;
}