CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > SU2

Correct Tipgap Marker?

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

Like Tree1Likes
  • 1 Post By Vafi

LinkBack Thread Tools Search this Thread Display Modes
Old   April 28, 2023, 15:22
Default Correct Tipgap Marker?
New Member
Join Date: Nov 2022
Posts: 4
Rep Power: 2
Vafi is on a distinguished road
What would be the correct marker for the tipgap with respect to a turbine row. I have tried MARKER_INTERNAL but this diverges the simulation. MARKER_SYM seems to work but I'm not sure whether this is the correct marker. Following Turbogrid, the tipgap is exported following 2 surfaces (SHROUDTIPGGISIDE1 and 2). These are represented by the purple surfaces following the attached image, where I left out a few other surfaces for clarity. The tipgap surfaces are both in the same zone, where I use the multizone setup for other turbine rows.
Attached Images
File Type: jpg blade.jpg (117.8 KB, 9 views)
Vafi is offline   Reply With Quote

Old   April 28, 2023, 22:00
Senior Member
Pedro Gomes
Join Date: Dec 2017
Posts: 458
Rep Power: 12
pcg is on a distinguished road
That would be an interface, but we do not have internal interfaces at the moment (v7.5) (only between different zones).
Therefore we cannot model it, you need to either get TG to make a connected tip gap region, or to remove the tip gap, or model those surfaces as walls.
pcg is offline   Reply With Quote

Old   July 10, 2023, 06:47
New Member
Join Date: Jun 2023
Location: Austria
Posts: 4
Rep Power: 2
Lor_enz is on a distinguished road
Just as an idea, would it work to set it as a periodic boundary with 0 between the two faces?

Would love to hear your thoughts on that approach. I will give it at test as soon as i have time and post my results here.
Lorenz H.

PhD Student
Montanuniversity Leoben
Lor_enz is offline   Reply With Quote

Old   July 11, 2023, 06:48
New Member
Join Date: Nov 2022
Posts: 4
Rep Power: 2
Vafi is on a distinguished road
I have tried this but it did not work. The best fix is to create a mesh without these interfaces. Following TurboGrid this is possible atm using a beta feature.

For anyone with the same issue, you first have to enable the beta features and then select "Conformal Tip Enabled" (see both attached images). This should export a mesh without these tipgap interfaces.
Attached Images
File Type: png Enable_BETA.png (19.7 KB, 4 views)
File Type: png Conformal_Tip_Enabled.png (22.8 KB, 3 views)
Lor_enz likes this.
Vafi is offline   Reply With Quote


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
Is my Dynamic mesh setup correct? cfd seeker FLUENT 16 October 30, 2020 06:16
Marker_shroud jomunkas SU2 1 April 24, 2020 11:51
SU2 Marker error for 3D CGNS mesh McAero SU2 4 November 9, 2017 13:54
Markers and parts name in SU2 and ICEM for my own case McAero SU2 10 November 7, 2017 18:05
Is there a way to find a correct "spacing"? Jordi P. Main CFD Forum 2 August 15, 2013 10:05

All times are GMT -4. The time now is 23:53.