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

[ANSYS Meshing] Blocking and Meshing Strategy for an open flow domain over backward facing ramp

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

LinkBack Thread Tools Search this Thread Display Modes
Old   January 11, 2013, 05:48
Default Blocking and Meshing Strategy for an open flow domain over backward facing ramp
Senior Member
Crank-Shaft's Avatar
Join Date: Oct 2012
Location: Sydney, Australia
Posts: 166
Rep Power: 13
Crank-Shaft is on a distinguished road
Hello everyone,

There is another older thread with a description and images of the geometry of interest - Blocking and Meshing around a vane vortex generator

I am still working on a simulation with similar objectives to those described in a past thread - One particular domain with a given aspect ratio and vortex generator orientation was fully optimised, blocked and meshed and I have used it for numerous Fluent simulations without any problems.

However, I recently changed the vortex generator vane to half the previous height, and used the exact same blocking and meshing strategy in ANSYS Design Modeler and Meshing. Unfortunately, I keep receiving mesh skewness warnings when I try to import into Fluent and the orthogonal quality is catastrophic. This fell below 3e-3 based on the Ansys Meshing histogram and I have tried several different options including Advanced Sizing and Multizone with mapped-mesh-only, free Hexa-core, free Hexa-dominant amongst others. I really need some help in meshing this geometry and I have observed that users here work with far more complicated geometries so please share your opinions and suggestions.

The edge biased-sizing values were kept exactly the same as the higher vortex generator and this may also need to be changed. I really need to try and find a consistent approach for generating hexahedral meshes with a reasonable orthogonal quality and skewness.

The uploaded geometry and mesh files can be found here -

. I look forward to your response.
Attached Images
File Type: png Warning.PNG (30.0 KB, 10 views)
File Type: jpg Blocking.jpg (21.0 KB, 15 views)
File Type: jpg Tunnel2.jpg (45.6 KB, 18 views)
File Type: jpg Tunnel.jpg (17.7 KB, 18 views)
File Type: jpg Outlet.jpg (65.7 KB, 14 views)
Mechanical Engineering
Sydney, Australia

Crank-Shaft is offline   Reply With Quote


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
[ANSYS Meshing] Blocking and Meshing around a vane vortex generator Crank-Shaft ANSYS Meshing & Geometry 5 January 17, 2016 23:29
[ICEM] Flow channel meshing problems StefanG ANSYS Meshing & Geometry 19 May 15, 2012 06:44

All times are GMT -4. The time now is 12:27.