CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > SU2

Restarting Simulation with Spatial Fourier Activated Giles BCs

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 21, 2022, 10:05
Post Restarting Simulation with Spatial Fourier Activated Giles BCs
  #1
New Member
 
Josh Kelly
Join Date: Dec 2018
Posts: 6
Rep Power: 7
joshkellyjak is on a distinguished road
Hi,


I'm running a radial-inflow turbine simulation using Giles BCs and a mixing plane between the nozzle guide vane and rotor zones, similar to the method described in the APU turbocharger test case. My solution runs with the SPATIAL_FOURIER option turned off and converges to the values of mass flow I would expect but the values of pressure at the boundaries don't match the BCs when I process the results in Paraview after. I think this is due to reflections at the boundaries as I observed similar issues when simulating just the nozzle guide vane which was solved by activating the NRBC. However, when I do this with my full simulation it diverges after 2/3 iterations. Is it possible to run a simulation with the NRBC turned off, have it converge to a given point then restart the simulation with it turned on? If not, why does my simulation diverge after a couple of iterations with NRBC activated when starting from scratch. I have attached my .cfg file to this post and any help would be greatly appreciated!


Thank you in advance
Attached Files
File Type: txt emp_valid.txt (12.3 KB, 4 views)
joshkellyjak is offline   Reply With Quote

Reply

Tags
giles boundary, mixing plane, non reflecting boundary, turbomachinery

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
BCs in an FSI simulation of a flexble pipe vivekcfd OpenFOAM 10 January 8, 2010 05:14
Restarting simulation with a Backup file. Mohammad Faridul Alam CFX 3 November 2, 2007 16:53
restarting lagrange (particle tracking) simulation dbdias CFX 0 September 22, 2007 20:26
Restarting KIVA simulation Tomislav Main CFD Forum 2 April 5, 2006 04:22
Difficult BCs about Freesurface Simulation by VOF Yongguang Cheng FLUENT 0 September 19, 2003 08:39


All times are GMT -4. The time now is 07:50.