|
[Sponsors] |
Outlet with flowRateInletVelocity: reverse flow |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
August 14, 2015, 05:22 |
Outlet with flowRateInletVelocity: reverse flow
|
#1 |
New Member
Sarah Leenknegt
Join Date: Aug 2015
Posts: 14
Rep Power: 10 |
Dear all,
I am relatively new to OpenFoam, but do have previous experience with Fluent. I am trying to simulate a building with the following features: - ventilation air supplied via 8 inlets inside the building and the same air volume extracted via 2 ventilation outlets - external door is open to the atmosphere, respresented by a box - just inside from the external door, an inlet and outlet represent an air curtain My modell runs stable, the only major problem is that my outlets are supplying air instead of extracting. I have included a drawing to clarify, the red arrow indicates where it goes wrong. I have applied the following pressure and velocity boundary conditions: - Atmosphere = Totalpressure + pressureinletoutletvelocity - inlet for air curtain = fixedfluxpressure + positive flowrateinletvelocity - inlet for ventilation = fixedfluxpressure + fixed value - outlet for air curtain = fixedfluxpressure + negative flowrateinletvelocity - outlet for ventilation = fixedfluxpressure + negative flowrateinletvelocity The buildings mass balance according to the boundary conditions is correct, but in the simulation obviously not, with massive air flows via the door to the atmosphere. I would appreciate any tips as to what I am doing wrong! Kind regards, Sarah |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Compressible flow, no data at the outlet | mireis | FLUENT | 6 | September 3, 2015 02:10 |
Temperature at a velocity/mass flow outlet | saisanthoshm88 | CFX | 1 | July 8, 2014 18:35 |
Mass flow inlet and pressure outlet issue | nikhil | FLUENT | 5 | December 11, 2013 12:30 |
CAN'T CONVERGE WITH REVERSE FLOW AT OUTLET! | XIAOYI LI | FLUENT | 11 | September 14, 2012 16:43 |
CFDesign V11 -- Reverse flow at outlet | maruthiv | Autodesk Simulation CFD | 1 | June 17, 2011 09:38 |