|
[Sponsors] |
September 2, 2013, 02:07 |
boundary condition
|
#1 |
New Member
UMP
Join Date: Sep 2013
Posts: 1
Rep Power: 0 |
hi Guys:
i have question about boundary condition at the exit flow pipe on Gambit? what is the difference between pressure outlet and outflow? TQ |
|
September 2, 2013, 13:39 |
|
#2 |
Member
|
As I understood about outlet and outflow is based on what kind of flow you are looking at , internal flow or external flow. If internal flow it is outlet condition, for external flow it is out flow condition.
Correct me if I am wrong. Thank you |
|
September 2, 2013, 16:37 |
|
#3 |
Senior Member
Lefteris
Join Date: Oct 2011
Location: UK
Posts: 337
Rep Power: 15 |
When you set pressure outlet boundary condition, the flowfield is determined by the pressure difference between the inlet and the outlet.
When you set outflow boundary condition, the variables are extrapolated to the boundary from the interior nodes and you have zero gradient at the boundary
__________________
Lefteris |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Domain Imbalance | HMR | CFX | 5 | October 10, 2016 05:57 |
Radiation interface | hinca | CFX | 15 | January 26, 2014 17:11 |
Error finding variable "THERMX" | sunilpatil | CFX | 8 | April 26, 2013 07:00 |
Setting outlet Pressure boundary condition using CAFFA code | Mukund Pondkule | Main CFD Forum | 0 | March 16, 2011 03:23 |
How exactly the "pressure outlet" bdry condition compute properties on the boundary? | yating9901 | FLUENT | 3 | June 28, 2010 12:26 |