|April 25, 2011, 13:13||
Boundary condition for exhaut flow with imposed mass flow
Join Date: Apr 2011
Posts: 3Rep Power: 7
I'm modeling the ventilation of a room with Fluent. At the inlet, I would like to use a velocity inlet BC. I have several outlets. I would like to impose the mass flow at these outlets. For instance, let's say I have an inlet with a mass flow equal to 1 kg/s and 2 outlets where the mass flow are equal to respectively 0.8 kg/s and 0.2 kg/s. Which BC should I use at the outlets? Can I use some velocity inlet BC at the outlets to impose the flowrate? Or should I use some pressure outlet boundaries with the target mass flow rate option? I could also use an outflow BC and adjust the flow rate weighting. What is the best approach.
Thanks in advance,
|November 24, 2011, 03:04||
Join Date: Mar 2009
Location: Indiana, US
Posts: 185Rep Power: 9
I assume your flow might be compressible. If so, the outflow condition will not be applicable. The pressure outlet BC with target mass flow is a better option.
Oops, this is a late reply. Hope it helps.
|Thread||Thread Starter||Forum||Replies||Last Post|
|External,incompressible flow boundary condition?||John||FLUENT||2||August 19, 2011 00:42|
|outflow boundary condition foe flow over a cylinder||Ardalan||Main CFD Forum||0||April 29, 2010 13:04|
|mass flow in is not equal to mass flow out||saii||CFX||2||September 18, 2009 08:07|
|Target Mass Flow Rate||Nitin||FLUENT||6||March 12, 2004 06:39|
|OutletBoundary Condition Causes Mass Imbalance||Andy||Main CFD Forum||0||March 11, 2004 15:05|