fixedFluxPressure

sinhavivekananda318 · June 23, 2018, 01:02

Hey foamers,
I am using interFoam for solving my case. Now my inlet velocity is 0.0833 m/s..so if i want to use fixedFluxPressure at the inlet then I have a doubt.
in interFoam the value of p_rgh would be uniform 0 or have to calculate the dynamic pressure by pho*U^2/2...and then put the value instead of uniform 0?
so my doubt is whether the bc would be:

type fixedFluxPressure;
value uniform 0;

or

type fixedFluxPressure
value uniform pho*U^/2;

Taataa · June 23, 2018, 10:56

It doesn't need the value line! Take a look at the description here.

er_ijaz · September 11, 2018, 07:51

Hi
p_rgh is not dynamic pressure, instead it p-(density*gravity(-9.81)*height of the boundary.

June 23, 2018, 01:02	fixedFluxPressure	#1
sinhavivekananda318 New Member Vivekananda Join Date: May 2017 Location: Cardiff, UK Posts: 26 Rep Power: 8	Hey foamers, I am using interFoam for solving my case. Now my inlet velocity is 0.0833 m/s..so if i want to use fixedFluxPressure at the inlet then I have a doubt. in interFoam the value of p_rgh would be uniform 0 or have to calculate the dynamic pressure by phoU^2/2...and then put the value instead of uniform 0? so my doubt is whether the bc would be: type fixedFluxPressure; value uniform 0; or type fixedFluxPressure value uniform phoU^/2;

June 23, 2018, 10:56		#2
Taataa Senior Member Taher Chegini Join Date: Nov 2014 Location: Houston, Texas Posts: 125 Rep Power: 12	It doesn't need the value line! Take a look at the description here. saidc. likes this.

September 11, 2018, 07:51	p_rgh is not dynamic pressure	#3
er_ijaz Member ijaz fazil Join Date: Apr 2013 Location: Singapore Posts: 73 Rep Power: 13	Hi p_rgh is not dynamic pressure, instead it p-(densitygravity(-9.81)height of the boundary.

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