|January 11, 2013, 06:48||
Blocking and Meshing Strategy for an open flow domain over backward facing ramp
Join Date: Oct 2012
Location: Sydney, Australia
Posts: 145Rep Power: 5
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 - Suggestions required for modelling vortex generator with variable angle of attack. 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 - http://www.filefactory.com/file/42a5...owVG-Pos60_msh
. I look forward to your response.
|Thread||Thread Starter||Forum||Replies||Last Post|
|[ANSYS Meshing] Blocking and Meshing around a vane vortex generator||Crank-Shaft||ANSYS Meshing & Geometry||4||December 17, 2012 04:12|
|[ICEM] Flow channel meshing problems||StefanG||ANSYS Meshing & Geometry||19||May 15, 2012 06:44|