CFD Online Logo CFD Online URL
Home > Forums > ANSYS Meshing & Geometry

[ICEM] Strange negative quality

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

LinkBack Thread Tools Display Modes
Old   December 22, 2011, 04:08
Default Strange negative quality
Senior Member
Join Date: Dec 2010
Location: Seoul, South korea
Posts: 214
Rep Power: 9
mohammad is on a distinguished road
Dear all, I am trying to mesh an airfoil ( 2D ) with a split with ICEM 11.
I have created the Parasolid file is Solidworks 2010 and imported the file to ICEM.
every thing seems to be alright , and just when i create the hexa mesh, I can see at one line related to split edge at the suction surface the quality is negative.
This is because the ICEM creates and considers some very small imaginary small surfaces that do not exist in the geometry( in reality) and you can not see them physically, but they exist in mathematical considerations for the geometry.
this imaginary non existing areas ( and curves) although are not being associated with any edges, but absorb some edges to themselves ( by the software) and make some elements with negative qualities.
A i told you , investigation of the geometry shows no sign of such surfaces and curves, but observation of the elements shows those badly twisted elements with negative quality.
I want to ask has anyone faced this problem before and how to solve it.

mohammad is offline   Reply With Quote


Thread Tools
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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
[ANSYS Meshing] STRANGE negative quality for elements mohammad ANSYS Meshing & Geometry 2 December 24, 2011 01:59
mesh airfoil NACA0012 anand_30 OpenFOAM Meshing & Mesh Conversion 12 December 12, 2011 05:16
BlockMesh FOAM warning gaottino OpenFOAM Native Meshers: blockMesh 7 July 19, 2010 14:11
[ICEM] Hex refinement negative quality afterwards Anorky ANSYS Meshing & Geometry 8 March 22, 2010 04:25
Axisymmetrical mesh Rasmus Gjesing (Gjesing) OpenFOAM Native Meshers: blockMesh 10 April 2, 2007 14:00

All times are GMT -4. The time now is 01:10.