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

Questions about SU2 and CFD

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 15, 2018, 07:16
Question Questions about SU2 and CFD
  #1
Member
 
João Lourenço
Join Date: Jan 2017
Posts: 32
Rep Power: 8
JPBLourenco is on a distinguished road
Hi everyone,

Can anyone help me with a few questions about SU2 and CFD?
[LIST=1]
I want to introduce a pitching moment constraint of Mz => -0.087, how I introduce that in SU2? Maybe Moment_Z < 0.087?
I don't know the axis direction and moments in SU2 and this leave me crazy.
[LIST=2]
I set the RESIDUAL_REDUCTION = 6 and the RESIDUAL_MINVAL = -6. This mean the stop criterion for the residual is until the solver achieved to -6*10^-6?
[LIST=3]
My adjoint solution, after 10000 iteration achieve to -3.5 of the residual density. Again the RESIDUAL_REDUCTION = 6 and the RESIDUAL_MINVAL = -6 is set. For the adjoint solution decrease until -6 it is need a huge number of iteration. In an shape_optimization this will cost a lot. The value of -3.5 is a satisfaction value or I need to decrease more ? What impact have in decreasing this value for the adjoint solution and for the optimization?

[LIST=4]
In the optimal shape design definition I can define the upper and lower bound for each design variable. Using the value of OPT_BOUND_UPPER = 0.1
OPT_BOUND_LOWER = -0.1 means that, each design variable can move between 0.1 and -0.1 of its initial position?

Thanks for you attention,
João Lourenço
JPBLourenco is offline   Reply With Quote

Old   March 28, 2019, 01:23
Default
  #2
New Member
 
cfdjetman
Join Date: Mar 2019
Posts: 25
Rep Power: 5
cfdjetman is on a distinguished road
I have the same doubt about LIST=1.


Please let me know what the answer is.
cfdjetman is offline   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
Introducing SU2 International Developers Society (IDS) fpalacios SU2 News & Announcements 1 June 17, 2019 23:38
Pointwise and SU2 joint workshop fpalacios SU2 News & Announcements 0 July 28, 2014 21:26
Official release of SU2 V3.0 and SU2 Educational V1.0 fpalacios SU2 News & Announcements 2 January 22, 2014 06:28
Welcome to the Stanford University Unstructured (SU2) forum! economon SU2 0 January 7, 2013 03:48
New SU2 Forum Opened at CFD Online pete Site News & Announcements 0 January 5, 2013 18:59


All times are GMT -4. The time now is 22:06.