CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > ANSYS Meshing & Geometry

[ICEM] set up of boundary layer for cylinder

Register Blogs Community New Posts Updated Threads Search

Like Tree1Likes
  • 1 Post By bluebase

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 29, 2014, 14:31
Post set up of boundary layer for cylinder
  #1
New Member
 
Attique Javaid (attique@outlook.com)
Join Date: Apr 2014
Location: Pakistan
Posts: 14
Rep Power: 12
Attique is on a distinguished road
Hi!

Although I checked in for thread concerned to what I am looking for, didn't find any help. so, decided to create my own.

following a tutorial to get h-grid for a small semi-cylindrical geometry (dia12mm length25mm) in ICEM (beginner level)

http://148.204.81.206/Ansys/150/ANSY...l%20Manual.pdf

I've attached figures of mesh. understood the process upto o-grid setup in that tutorial. My point of interest is to set up the boundary layer at the moment. So that after completing this practice example with boundary layer, I wouldl be able to move forward to my actual problem.

In part mesh setup, enabled prism option for wall and tried to put in number of layers but still not successful. how to accomplish it? how to add just a random boundary layer in ICEM?

your help will be appreciated.

Regards,
AJ
Attached Images
File Type: jpg 01.jpg (53.8 KB, 25 views)
File Type: jpg 02.jpg (60.5 KB, 13 views)
Attique is offline   Reply With Quote

Old   June 2, 2014, 06:34
Default
  #2
Far
Senior Member
 
Sijal
Join Date: Mar 2009
Location: Islamabad
Posts: 4,558
Blog Entries: 6
Rep Power: 54
Far has a spectacular aura aboutFar has a spectacular aura about
Send a message via Skype™ to Far
Quote:
Originally Posted by Attique View Post
Hi!

Although I checked in for thread concerned to what I am looking for, didn't find any help. so, decided to create my own.

following a tutorial to get h-grid for a small semi-cylindrical geometry (dia12mm length25mm) in ICEM (beginner level)

http://148.204.81.206/Ansys/150/ANSY...l%20Manual.pdf

I've attached figures of mesh. understood the process upto o-grid setup in that tutorial. My point of interest is to set up the boundary layer at the moment. So that after completing this practice example with boundary layer, I wouldl be able to move forward to my actual problem.

In part mesh setup, enabled prism option for wall and tried to put in number of layers but still not successful. how to accomplish it? how to add just a random boundary layer in ICEM?

your help will be appreciated.

Regards,
AJ
create ogrid...
Far is offline   Reply With Quote

Old   June 2, 2014, 08:33
Default
  #3
Senior Member
 
Sebastian Engel
Join Date: Jun 2011
Location: Germany
Posts: 567
Rep Power: 21
bluebase will become famous soon enough
Within the documentation which comes with ICEM are tutorials closely related to your problem. One is called "Hexa Mesh Generation for a 3D Pipe Junction". Also try the 2D Car Tutorial if you haven't yet. The Part Mesh Setup is a feature related to unstructured meshing. Have look on the tutorial "Tetra/Prism Mesh Generation for an Aorta" to see the difference.
Last but not least, do the tutorial Merged "Tetra-Hexa Mesh in a Hybrid Tube".

With going through those four you should be able to answer your questions yourself.

With regards,
Sebastian
Attique likes this.
bluebase is offline   Reply With Quote

Old   June 4, 2014, 23:34
Default
  #4
New Member
 
Attique Javaid (attique@outlook.com)
Join Date: Apr 2014
Location: Pakistan
Posts: 14
Rep Power: 12
Attique is on a distinguished road
Quote:
Originally Posted by bluebase View Post
Within the documentation which comes with ICEM are tutorials closely related to your problem. One is called "Hexa Mesh Generation for a 3D Pipe Junction". Also try the 2D Car Tutorial if you haven't yet. The Part Mesh Setup is a feature related to unstructured meshing. Have look on the tutorial "Tetra/Prism Mesh Generation for an Aorta" to see the difference.
Last but not least, do the tutorial Merged "Tetra-Hexa Mesh in a Hybrid Tube".

With going through those four you should be able to answer your questions yourself.

With regards,
Sebastian
You were right. I didn't check these tutorials and I'm definetly gonna check now for improvement of my meshing basics and approach. Thank you so much for your time.

@Far
I've created 0-grid. I found edge-parameter under pre-mesh parameter category and applied linear scale with some number of required nodes to define BL. Gonna write it and post it in a form of tutorial soon as well.
Attique is offline   Reply With Quote

Old   June 5, 2014, 00:48
Default
  #5
New Member
 
Attique Javaid (attique@outlook.com)
Join Date: Apr 2014
Location: Pakistan
Posts: 14
Rep Power: 12
Attique is on a distinguished road
This is how i went through all process. hope, it will help other guys like me.
Attached Images
File Type: jpg 01.jpg (32.7 KB, 13 views)
File Type: jpg 02.jpg (36.7 KB, 11 views)
File Type: jpg 04.jpg (42.2 KB, 8 views)
File Type: jpg 05.jpg (45.8 KB, 12 views)
File Type: jpg 07.jpg (44.9 KB, 9 views)
Attique is offline   Reply With Quote

Old   June 5, 2014, 00:49
Default
  #6
New Member
 
Attique Javaid (attique@outlook.com)
Join Date: Apr 2014
Location: Pakistan
Posts: 14
Rep Power: 12
Attique is on a distinguished road
continued...
Attached Images
File Type: jpg 08.jpg (45.7 KB, 6 views)
File Type: jpg 09.jpg (49.3 KB, 6 views)
File Type: jpg 10.jpg (48.3 KB, 6 views)
File Type: jpg 11.jpg (49.6 KB, 7 views)
File Type: jpg 12.jpg (51.2 KB, 7 views)
Attique is offline   Reply With Quote

Old   June 5, 2014, 00:52
Default
  #7
New Member
 
Attique Javaid (attique@outlook.com)
Join Date: Apr 2014
Location: Pakistan
Posts: 14
Rep Power: 12
Attique is on a distinguished road
continued... part 3
Attached Images
File Type: jpg 13.jpg (50.2 KB, 4 views)
File Type: jpg 14.jpg (45.0 KB, 3 views)
File Type: jpg 15.jpg (38.1 KB, 3 views)
File Type: jpg 16.jpg (44.5 KB, 4 views)
File Type: jpg 17.jpg (44.2 KB, 5 views)
Attique is offline   Reply With Quote

Old   June 5, 2014, 00:53
Default
  #8
New Member
 
Attique Javaid (attique@outlook.com)
Join Date: Apr 2014
Location: Pakistan
Posts: 14
Rep Power: 12
Attique is on a distinguished road
continued... part 4
Attached Images
File Type: jpg 18.jpg (44.2 KB, 5 views)
File Type: jpg 19.jpg (51.5 KB, 5 views)
File Type: jpg 20.jpg (47.5 KB, 8 views)
File Type: jpg 21.jpg (46.8 KB, 7 views)
File Type: jpg 22.jpg (39.8 KB, 5 views)
Attique is offline   Reply With Quote

Old   June 5, 2014, 00:54
Default
  #9
New Member
 
Attique Javaid (attique@outlook.com)
Join Date: Apr 2014
Location: Pakistan
Posts: 14
Rep Power: 12
Attique is on a distinguished road
continued... part 5
Attached Images
File Type: jpg 23.jpg (39.9 KB, 2 views)
File Type: jpg 24.jpg (50.5 KB, 2 views)
File Type: jpg 25.jpg (46.4 KB, 3 views)
File Type: jpg 26.jpg (51.6 KB, 5 views)
File Type: jpg 27.jpg (45.4 KB, 3 views)
Attique is offline   Reply With Quote

Old   June 5, 2014, 00:54
Default
  #10
New Member
 
Attique Javaid (attique@outlook.com)
Join Date: Apr 2014
Location: Pakistan
Posts: 14
Rep Power: 12
Attique is on a distinguished road
continued... part 6
Attached Images
File Type: jpg 28.jpg (50.0 KB, 4 views)
File Type: jpg 29.jpg (45.4 KB, 3 views)
File Type: jpg 30.jpg (39.9 KB, 3 views)
File Type: jpg 31.jpg (42.0 KB, 6 views)
File Type: jpg 32.jpg (54.7 KB, 5 views)
Attique is offline   Reply With Quote

Old   June 5, 2014, 00:55
Default
  #11
New Member
 
Attique Javaid (attique@outlook.com)
Join Date: Apr 2014
Location: Pakistan
Posts: 14
Rep Power: 12
Attique is on a distinguished road
continued... part 7
Attached Images
File Type: jpg 34.jpg (42.9 KB, 3 views)
File Type: jpg 35.jpg (44.3 KB, 5 views)
File Type: jpg 36.jpg (48.9 KB, 4 views)
File Type: jpg 37.jpg (46.2 KB, 3 views)
File Type: jpg 38.jpg (47.0 KB, 5 views)
Attique is offline   Reply With Quote

Old   June 5, 2014, 00:56
Default
  #12
New Member
 
Attique Javaid (attique@outlook.com)
Join Date: Apr 2014
Location: Pakistan
Posts: 14
Rep Power: 12
Attique is on a distinguished road
continued... part 8.
Attached Images
File Type: jpg 39.jpg (48.7 KB, 6 views)
File Type: jpg 40.jpg (47.8 KB, 6 views)
File Type: jpg 41.jpg (50.2 KB, 9 views)
File Type: jpg 42.jpg (54.3 KB, 12 views)
Attique is offline   Reply With Quote

Old   June 5, 2014, 01:05
Default
  #13
New Member
 
Attique Javaid (attique@outlook.com)
Join Date: Apr 2014
Location: Pakistan
Posts: 14
Rep Power: 12
Attique is on a distinguished road
if anybody have any suggestion either better or not, doesn't matter, for any step regarding posted steps, do mention here please. it will really help. Why did i ask? the reason behind is

1) i've not used other options while defining edge parameter.
2) another point i've in my mind is, i made quadrantel angle block edges while redefining their positions after o-grid. how can i get a better circular shape of mesh? referring to figure 39,40,41...

or any other thing which you notice and can be improved, point it out please.

Regards,
AJ
Attique is offline   Reply With Quote

Old   June 5, 2014, 01:55
Default
  #14
New Member
 
Attique Javaid (attique@outlook.com)
Join Date: Apr 2014
Location: Pakistan
Posts: 14
Rep Power: 12
Attique is on a distinguished road
Quote:
Originally Posted by bluebase View Post
Within the documentation which comes with ICEM are tutorials closely related to your problem. One is called "Hexa Mesh Generation for a 3D Pipe Junction". Also try the 2D Car Tutorial if you haven't yet. The Part Mesh Setup is a feature related to unstructured meshing. Have look on the tutorial "Tetra/Prism Mesh Generation for an Aorta" to see the difference.
Last but not least, do the tutorial Merged "Tetra-Hexa Mesh in a Hybrid Tube".

With going through those four you should be able to answer your questions yourself.

With regards,
Sebastian
Just for right now, I've completed the tetra/hexa mesh in hybrid tube... and i really appreciate the way you pointed out. it helped me a lot regarding my 2nd thread which was mainly about problem related to interfaces.

I've another question, i've understood till the point where "mesh smoothing" process started which is the last step in that tutorial. i am looking for a little bit explanation of this step, please.

once again thanks a lot for your time.
Attique is offline   Reply With Quote

Reply

Tags
boundary layer, h-grid, icem


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
Wind turbine simulation Saturn CFX 60 July 17, 2024 06:45
Low Mixing time Problem Mavier CFX 5 April 29, 2013 01:00
No-slip condition for non-resolved boundary layer in open channel banks Lupocci Main CFD Forum 1 January 17, 2013 04:11
A question on "Specifying Boundary Layer Deformation Smoothing" didiean FLUENT 2 January 16, 2012 22:39
how to set temperature profile in atmospheric boundary layer vickrenz FLUENT 0 September 16, 2009 14:26


All times are GMT -4. The time now is 13:44.