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

[ICEM] Quality problem adjusting grid with y+

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 24, 2013, 10:56
Default Quality problem adjusting grid with y+
  #1
New Member
 
Andrew Kang
Join Date: Apr 2013
Posts: 18
Rep Power: 12
earth07 is on a distinguished road
I am currently working on the blade.

In order to get y+ to be near 1, I'm working on edge parameter
and have really bad quality(determinant) near pressure side of the blade
for the height of the first grid to be smaller than 0.014,
where it needs to be 0.004 according to calculation.

Weird part is, suction side shows no problem even for 0.001 of grid spacing, but for pressure side, even 0.013 causes problem.

I'm pretty sure there's no problem with geometry since I drew this geometry in ICEM with really low tolerance(less than 1e-06),
and I tried to check association problem,
but failed to find any problem.

What you see from the picture is that the pressure side of the blade and you see ogrid around the blade, associated to curves.


Any suggestion will be really appreciated.
(Sorry that I can't upload the files due to license of the geometry)
Attached Images
File Type: jpg 01.jpg (99.1 KB, 15 views)
File Type: jpg 02.jpg (95.2 KB, 12 views)
File Type: jpg 03.jpg (94.4 KB, 12 views)
earth07 is offline   Reply With Quote

Old   July 24, 2013, 11:07
Default
  #2
Far
Super Moderator
 
Sijal
Join Date: Mar 2009
Location: Islamabad
Posts: 4,553
Blog Entries: 6
Rep Power: 54
Far has a spectacular aura aboutFar has a spectacular aura about
Send a message via Skype™ to Far
May be changing blocking will solve problem
Far is offline   Reply With Quote

Reply


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
Problem with staggered grid on numerical simulation gtr84 Main CFD Forum 1 February 15, 2012 07:58
Display Grid problem Mohsin FLUENT 1 March 12, 2010 03:45
Improve smoothness & quality of structured grid quarkz Main CFD Forum 2 March 10, 2007 15:26
Problem with BC on non-overlapping grid interface Ori Levin FLUENT 1 August 29, 2006 18:32
nonstaggered grid problem Zhi-Xing Yu Main CFD Forum 7 August 26, 1998 13:22


All times are GMT -4. The time now is 00:02.