|
[Sponsors] |
![]() |
![]() |
#1 |
New Member
Jochen
Join Date: Oct 2019
Posts: 3
Rep Power: 6 ![]() |
Hi there,
I would like to simulate the flow in a closed area. I only have the body (wall) and the two patches for inlet and outlet. Both, inlet and outlet are the same size. In real, inflow and outflow caused by radial fan and have a velocity of about 10m / s. The pressure is not importent for me. solver: simpleFoam turbulence model: k-epsilon Question: How can I set the velocity at the inlet AND outlet? and how do I set the other BC? So far: Inlet: U=10 m/s P=zeroGradient Outlet:U=-10m/s P=fixedValue Any information would be great. Cheers |
|
![]() |
![]() |
![]() |
![]() |
#2 |
Senior Member
Join Date: Dec 2019
Location: Cologne, Germany
Posts: 365
Rep Power: 8 ![]() |
you should never do that,
you can give the inlet velocity and then give a reference pressure at outlet as BC. bc of mass conservation you should automatically have your mass conserved, i.e. average velocity at patch should be as in inlet. if you give same value at outlet you will not allow a developed profile. |
|
![]() |
![]() |
![]() |
Tags |
closed are, velocity inlet outlet |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
The method on dealing with velocity in static pressure outlet boundary condition | mona.li | CFX | 2 | September 30, 2017 01:33 |
Boundary conditions - same velocity boundary field in the inlet and outlet | t.oliveira | OpenFOAM Running, Solving & CFD | 5 | June 13, 2016 18:20 |
changing velocity (outlet) BC to pressure outlet | majid_kamyab | FLUENT | 7 | October 22, 2014 11:50 |
Inlet & Outlet Velocity BC issue | naiter | OpenFOAM | 3 | December 19, 2012 07:14 |
commit velocity outlet to velocity inlet | chelvistero | OpenFOAM | 0 | March 27, 2010 03:46 |