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

What is the best choice in Converge for minimizing wave reflections at boundaries?

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 25, 2017, 04:34
Default What is the best choice in Converge for minimizing wave reflections at boundaries?
  #1
New Member
 
Nicolas Vasset
Join Date: Jan 2017
Posts: 1
Rep Power: 0
NVasset is on a distinguished road
I am trying to use results from a 1D simulation code to provide boundary conditions to my 3D simulation (intake manifold). I know that a poor choice in boundary setup in 3D will result in wave reflections at the coupling boundary. I am still unsure whether the best option is to work on mass flow rate (Dirichlet, Neumann condition for pressure), to impose pressure as a Dirichlet condition, or something else.

What is the best way to do this in Converge?
Many thanks in advance!
NVasset is offline   Reply With Quote

Old   February 13, 2017, 17:39
Default
  #2
Member
 
Dan Probst
Join Date: Jan 2016
Location: Convergent Science, Madison WI
Posts: 38
Rep Power: 8
dprobst is on a distinguished road
For coupled simulations with a 1D code like GT-Power, we recommend massflow on an inflow and pressure on an outflow when imposing boundary conditions.

If you aren't coupling with the 1D code, but imposing results as the boundary condition, we recommend pressure on both the inflow and outflow.
__________________
Dan Probst
Principal Engineer
CONVERGECFD
dprobst is offline   Reply With Quote

Reply

Tags
boundary conditions, converge, coupled bc, wave

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
Use CONVERGE to capture shock wave williamchina CONVERGE 1 September 9, 2016 13:35
How to find the reflections of the pressure wave in pipe lines RKR Main CFD Forum 0 April 6, 2011 08:08
Scaling up a wave energy converter - free surface flow mark_l CFX 3 February 17, 2010 16:57
Wave Amplitudes for Non-Reflective Boundaries Richard Wagner Main CFD Forum 8 April 20, 2006 15:35
Transient wave Tranmissive Boundaries Arnab Siemens 0 November 11, 2004 14:29


All times are GMT -4. The time now is 22:07.