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

[ANSYS Meshing] meshing a wigley hull using tetra/prism

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

Reply
 
LinkBack Thread Tools Display Modes
Old   October 5, 2016, 07:40
Default meshing a wigley hull using tetra/prism
  #1
Senior Member
 
Daniel
Join Date: Mar 2013
Posts: 213
Rep Power: 13
Daniel_Khazaei will become famous soon enough
Dear colleagues,

I'm trying to mesh a Wigley hull form for hydrodynamic analysis! I have tried both ANSYS Meshing and ICEM to create a tetra/prism mesh for this geometry! however when I try to add a boundary layer on the hull surface using inflation, the mesh quality decrease drastically

here is the hull form which consist of sharp edges at the front, back and bottom:


I have tried to change many parameters and this is the best I could get:

min orthogonal quality: 0.015
max skewness: 0.98

The low quality and skewed elements are within the boundary layer...

Is there any way to get a better mesh?

best wishes
tnx in advance
Daniel_Khazaei is offline   Reply With Quote

Old   October 6, 2016, 06:52
Default
  #2
Senior Member
 
Daniel
Join Date: Mar 2013
Posts: 213
Rep Power: 13
Daniel_Khazaei will become famous soon enough
Just to let you know, I have managed to fix the problem by adding zero-thickness plates at sharp edges! this way the prism layer doesn't need to turn around the hull!

now I get:

min orthogonal quality: 0.105
max skewness: 0.86
Daniel_Khazaei is offline   Reply With Quote

Reply

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
[ICEM] learning tetra/prism meshing jumpmonkey ANSYS Meshing & Geometry 0 September 20, 2016 09:32
[gmsh] Vertex numbering is dense KateEisenhower Open Source Meshers: Gmsh, Netgen, CGNS, ... 7 August 3, 2015 10:49
[GAMBIT] Meshing complex geometry (Hull) vmeertens ANSYS Meshing & Geometry 26 March 29, 2010 10:24
Negative Volumes in Wigley Hull ICEM CFD Carlos Andrés CFX 2 March 1, 2010 03:55
Timestep in Free Surface Wigley Hull Carlos Andrés CFX 8 April 29, 2007 16:38


All times are GMT -4. The time now is 09:58.