CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

Re: Pressure Outlet Conditions

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   December 20, 2006, 12:29
Default Re: Pressure Outlet Conditions
Posts: n/a
I have a piece of ducting with one inlet and two outlets, that has high pressure, high temperature air flowing through it (at a maximum of about Mach 0.3 to 0.5).

I know the inlet pressure and mass flow rate. However, I have only been given the outlet mass flow rate and not pressure.

I have mass-flow-inlet for the inlet, and a pressure-outlet at the exit. I need to set the pressure on the exit, but do not have any information, has anyone had experience with this?

I cannot use the outlet boundary condition because it is compressible flow.

Thank you

  Reply With Quote

Old   December 20, 2006, 13:36
Default Re: Pressure Outlet Conditions
Posts: n/a
Hi Andrew,

If you have been given the mass flow for both outlets separately, use the feature "target mass flow rate" at your pressure outlet conditions. If you specify this quantity, fluent will adjust the pressure at the outlet iteratively until the target mass flow is reached. To speed up your convergence, the initial guess of pressures at outlets should be as good as possible. I would also recommend to use pressure inlet rather than mass flow inlet.

  Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Setting Pressure Boundary Conditions in ANSYS CFX Pre saisanthoshm88 CFX 21 February 22, 2017 16:50
Pressure Outlet Guage pressure Mohsin FLUENT 36 April 29, 2016 17:16
Pressure and Velocity boundary conditions rsmartins CFX 9 September 12, 2015 06:32
Pressure boundary conditions hiras FLUENT 22 July 27, 2015 01:38
Using pressure outlet BC Shreyansh FLUENT 0 November 5, 2010 14:57

All times are GMT -4. The time now is 00:12.