CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM Running, Solving & CFD

Changing BC in squareBend

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

Reply
 
LinkBack Thread Tools Display Modes
Old   December 4, 2011, 14:30
Default Changing BC in squareBend
  #1
Member
 
Pierre Castellani
Join Date: Apr 2011
Location: Paris
Posts: 38
Rep Power: 6
pcaste12 is on a distinguished road
Hi,
I have a question about the flowRate in the tutorials squareBend:
for inlet in U it is fixed to 0.5, i suppose its kg/s?
I have done some simple conversion and I get a velocity around 510m/s, am I right? could somebody agree?
Unfortunatly if I put a fixed value of this velocity then rhoSimplecFoam is ending at the 2 iterations!!!

Any suggestion?

Many thanks,
Pierre.
pcaste12 is offline   Reply With Quote

Old   December 6, 2011, 07:00
Default Just adding info
  #2
Member
 
Pierre Castellani
Join Date: Apr 2011
Location: Paris
Posts: 38
Rep Power: 6
pcaste12 is on a distinguished road
Hi guys,
So i am still trying to understand how it is working, again on the squareBend I have inputed (and configured) a velocity like inlet. I am also using the swak4Foam in order to get the inlet massFlow.
1/ the tutorials case gives around 500m/s velocity and a simulated massFlow around 0.49 kg/s (which correspond to the inlet value)
2/ the new case generated using inlet velocity of 50m/s gives a simulated massFlow of 0.045 kg/s which is consistant

The (may be stupid) question is why I couldn't get a run working with more than 50m/s as inlet velocity?

Please..
Many thanks,
Pierre.

Note: I have attach the case.
Attached Files
File Type: gz squareBendFlwRate.tar.gz (5.3 KB, 0 views)
pcaste12 is offline   Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Changing patch temperature directly from the solver (buoyantPimpleFoam) kriztof OpenFOAM Running, Solving & CFD 11 January 23, 2012 18:55
energy changing associated with mass changing Martin duan FLUENT 0 August 6, 2011 12:42
UnSteady Boundary Conditions - Changing with time Docker FLUENT 4 July 14, 2011 11:01
Changing patches vs changing mesh for multiple cases Greg Givogue OpenFOAM Running, Solving & CFD 0 March 7, 2011 17:37
Changing contact line tfe FLOW-3D 3 December 8, 2009 03:59


All times are GMT -4. The time now is 20:49.