CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Mesh Generation & Pre-Processing Software > Pointwise & Gridgen

Meshing Structured Grid

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

Like Tree1Likes
  • 1 Post By Kirill-MIPT

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 25, 2017, 12:22
Default Meshing Structured Grid
  #1
Member
 
Abhinand
Join Date: Jun 2016
Posts: 75
Rep Power: 8
Abhinand is on a distinguished road
Hello guys,
I want to create a structured domain of a 20*20 square with a 0.1 inch circle inside it. How do I create the best mesh. Does it necessarily have to be structured in order to have better quality.
Please help me how to proceed with the grid generation

Many thanks
Abhinand is offline   Reply With Quote

Old   July 25, 2017, 16:24
Default
  #2
Member
 
Kirill-MIPT's Avatar
 
Kirill Borodin
Join Date: Mar 2016
Posts: 60
Rep Power: 8
Kirill-MIPT is on a distinguished road
Hello!

Divide the circle connector into 4 parts (begin from 45 degrees angle with step of 90 degrees) and draw 4 connectors from division points of the circle to the vertices of the square. Then put some points on the new connectors (the number depends on the type of the problem), adjust spacing. The result is structured mesh with 4 domains.
Kirill-MIPT is offline   Reply With Quote

Old   July 26, 2017, 07:35
Default
  #3
Member
 
Abhinand
Join Date: Jun 2016
Posts: 75
Rep Power: 8
Abhinand is on a distinguished road
Thanks for your reply.
I meshed the circle with OH topology and I tried using this method before, It resulted in high maximum included angle at the connectors joining the circle and the vertices of square. I tried running the solver and the results didnt change much. That is the reason I posted here, if there was some other method or approach or maybe how to better my mesh quality.

The problem with my geometry is the diameter of my circle is just 0.1 inch and the dimensions of square are 20 inches. Moreover the circle is not placed in the exact centre it is eccentric and is at a point (7,10) in the x-y plane

Any more suggestions?
Abhinand is offline   Reply With Quote

Old   July 27, 2017, 07:19
Default
  #4
Member
 
Kirill-MIPT's Avatar
 
Kirill Borodin
Join Date: Mar 2016
Posts: 60
Rep Power: 8
Kirill-MIPT is on a distinguished road
Does the circle stand for wall boundary condition? What about the sides of the square?

Sent from my Redmi Note 3 using CFD Online Forum mobile app
Kirill-MIPT is offline   Reply With Quote

Old   July 27, 2017, 07:49
Default
  #5
Member
 
Abhinand
Join Date: Jun 2016
Posts: 75
Rep Power: 8
Abhinand is on a distinguished road
The circle is an injector and its interior i suppose
the square is a flat plate and the domain of the square mesh is wall.
Im going to create a structured mesh with the square and circle i defined and extrude it in the y direction to create a block.
This is going to be a 3D simulation
So I was looking for ideas to create a quality structured mesh

Thanks
Abhinand is offline   Reply With Quote

Old   July 27, 2017, 17:46
Default
  #6
Member
 
Kirill-MIPT's Avatar
 
Kirill Borodin
Join Date: Mar 2016
Posts: 60
Rep Power: 8
Kirill-MIPT is on a distinguished road


Try drawing connectors via Bezier curves - you may vary inclination of the line in the end points this way. Also take a look at the pictures. I think it's a good idea for a mesh type that you need. In the inner side of the circle you may use butterfly topology
Abhinand likes this.
Kirill-MIPT 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
convert a structured multiblock grid to an one unstructured: modification of cells Mirage ANSYS 0 July 18, 2012 10:14
Simple structured grid RNE Main CFD Forum 2 September 24, 2008 13:50
Recommend structured grid deforming algorithm zonexo Main CFD Forum 0 April 17, 2006 04:24
matrix solver about block structured grid young min, Sohn Main CFD Forum 1 July 11, 2000 20:35
Grid Independent Solution Chuck Leakeas Main CFD Forum 2 May 26, 2000 12:18


All times are GMT -4. The time now is 20:43.