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

Some problems about SU2_GEO for CRM wing

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 17, 2019, 21:14
Default Some problems about SU2_GEO for CRM wing
  #1
New Member
 
Chenzhou Xu
Join Date: Oct 2018
Posts: 5
Rep Power: 4
xucz is on a distinguished road
I've been confused about geometry calculation by using SU2. I'm now working on the benchmark optimization problem from ADODG, case 4, CRM wing optimization. The details can be found at Martins's MDO lab ("http://mdolab.engin.umich.edu/content/aerodynamic-design-optimization-workshop"). In this case, there are volume and wing section airfoil thickness constraints. However, when I use the command SU2_GEO CRM.cfg, the "of_eval.dat" gives the wrong value of wing volume and thickness, and the curves in "wing_description.dat" are not smooth. I used the lasetest version SU2 v6.2.0 and get this wrong results. But when I used SU2 v5.0.0, the same command SU2_GEO, I got the right value of wing volume. Could anyone help me check this problem? I wonder if the lasetest version have the problem about geomentry calculation? The mesh can be downloaded from "http://mdolab.engin.umich.edu/content/aerodynamic-design-optimization-workshop" and my CRM.cfg is in the attachment. Could anyone help me to check the .cfg file and solve this geometry calculation problem. Thanks a lot!
Attached Files
File Type: txt xucz_CRMwing.cfg.txt (31.8 KB, 6 views)
File Type: txt of_eval(by SU2 v6.2.0).dat.txt (1.9 KB, 4 views)
File Type: txt of_eval(by SU2 v5.0.0 right one).dat.txt (1.8 KB, 1 views)
xucz is offline   Reply With Quote

Old   July 1, 2019, 01:21
Default Crm
  #2
New Member
 
Drashan Y.N
Join Date: Jun 2019
Posts: 14
Rep Power: 3
darshangowda046 is on a distinguished road
hi u r working on wing alone or wing+body+nacelle
darshangowda046 is offline   Reply With Quote

Old   July 1, 2019, 05:16
Default
  #3
New Member
 
Chenzhou Xu
Join Date: Oct 2018
Posts: 5
Rep Power: 4
xucz is on a distinguished road
Quote:
Originally Posted by darshangowda046 View Post
hi u r working on wing alone or wing+body+nacelle
Hi I'm working on CRM wing alone, ADODG case 4
xucz is offline   Reply With Quote

Old   July 19, 2019, 12:07
Default
  #4
New Member
 
yonghong
Join Date: Nov 2018
Posts: 7
Rep Power: 4
Kevin_N is on a distinguished road
Quote:
Originally Posted by xucz View Post
Hi I'm working on CRM wing alone, ADODG case 4
Hi chenzhou

I wonder have you got any results on the optimization of the CRM wing?
I have worked on it for a few weeks but still cannot get a better result. I tried a lot of settings. I still did not know why the optimization cannot find a better one.

If you have any progress on it, I will appreciate it for sharing the experience.

Cheers.
Yonghong
Kevin_N is offline   Reply With Quote

Old   July 21, 2019, 21:20
Default
  #5
New Member
 
Chenzhou Xu
Join Date: Oct 2018
Posts: 5
Rep Power: 4
xucz is on a distinguished road
Quote:
Originally Posted by Kevin_N View Post
Hi chenzhou

I wonder have you got any results on the optimization of the CRM wing?
I have worked on it for a few weeks but still cannot get a better result. I tried a lot of settings. I still did not know why the optimization cannot find a better one.

If you have any progress on it, I will appreciate it for sharing the experience.

Cheers.
Yonghong
Hi Yonghong
In fact, I used SU2 but also didn't make any progress. Have you ever checked your geometry calculation? I believe that there is something wrong with the geometry calculation of CRM wing and the constraints are really strict. Maybe you can substitue SU2 by ADflow, which was released by MDOlab from Martins group in github.
Best wishes.
Chenzhou
xucz is offline   Reply With Quote

Reply

Tags
geometry;crm wing

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
FFD shape deformation for 3D wing not changing the mesh lwc24 SU2 Shape Design 5 August 1, 2019 15:17
Low Cl and Cd for a simple subsonic wing Shruti Arumbakkam SU2 1 May 16, 2019 15:29
[ANSYS Meshing] Wing with winglet mesh problems MAH_cape ANSYS Meshing & Geometry 1 May 31, 2016 04:06
[ANSYS Meshing] 3D wing blocking and meshing marcanyada ANSYS Meshing & Geometry 0 September 3, 2014 12:57
[snappyHexMesh] Problems with coarse/unsnapped cells in snappyHexMesh scareneb OpenFOAM Meshing & Mesh Conversion 2 August 13, 2014 07:13


All times are GMT -4. The time now is 14:16.