CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > CFX

transitional inlet boundary condition

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 21, 2006, 08:38
Default transitional inlet boundary condition
  #1
kamp
Guest
 
Posts: n/a
Hi there,

I'd like to simulate a simplified propeller-wake entering an engine-inlet duct without having to model the propeller blade generating the wake. Therefore, as the propeller periodically interacts with the incomming flow, I intend to setup the inlet boundary condition of the duct in such a way as if the shadow of the blade passed the inlet-plane.

I planned to setup a profiled inlet b.c. which represents one blade wake (e.g. total pressure wake) and to apply it to the inlet in such a way that with each time step it is clockwisely moved a little bit (according to the speed of rotation of the blade). Doing so I hope to get the effect of a wake passing the inlet. I succeeded in applying a periodically changing inlet b.c. to the WHOLE inlet area via expressions. But what I want to do now is different as only the part of the inlet should be affected by the distortion which geometrically represents the extension of the blade (which is much narrower than the inlet is). Is there a way to achieve this (transitional applied profiled input) ?

Thank you in advance for any comment!

Markus
  Reply With Quote

Old   June 21, 2006, 11:08
Default Re: transitional inlet boundary condition
  #2
Joe
Guest
 
Posts: n/a
You can specify inlet conditions of arbitrary complexity both spatially and temporaly via user CEL / Fortran etc.
  Reply With Quote

Reply

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
ATTENTION! Reliability problems in CFX 5.7 Joseph CFX 14 April 20, 2010 15:45
How to use a solution as an inlet boundary condition in another problem in fluent geryes FLUENT 0 February 25, 2010 16:32
RPM in Wind Turbine Pankaj CFX 9 November 23, 2009 04:05
inlet and outlet boundary condition for turbomachinery solution siamak1424 OpenFOAM 2 August 15, 2009 11:14
Natural convection - Inlet boundary condition max91 CFX 1 July 29, 2008 20:28


All times are GMT -4. The time now is 03:18.