CFD Online URL
[Sponsors]
Home > Forums > OpenFOAM Native Meshers: snappyHexMesh and Others

weird results with featureEdges

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

Reply
 
LinkBack Thread Tools Display Modes
Old   July 31, 2013, 12:33
Default weird results with featureEdges
  #1
Member
 
Join Date: Sep 2012
Posts: 43
Rep Power: 4
Hiroshiman is on a distinguished road
Hi,
I am using snappyHexMesh and surfaceFeatureEdges extract to mesh a complex pipe with several intets/outlets. My goal is to have first, a good mesh and second, nice surface that can be detected with autoPatch to set up BCs.

Unfortunately, the mesh is quite ugly near the featureEdges as you can see on the pictures. I tried to play with the refinement parameters with no success.

Any idea on how to improve this ?

By the way, is there a way to use these featureEdges to locate BCs instead of using autoPatch ?



mesh_forum1.jpgmesh_forum3.jpg
mesh_forum2.jpg

----edit-----

Modifying de skewness parameters made everything work actually ; however, I'm still stuck with my BCs detection method. Even if I try to optimize the angle, the autoPatch still gives me unwanted results like this :
Code:
Feature:55
minCos :0.5735764

Assigned 1 faces to patch auto0

Assigned 892 faces to patch auto1

Assigned 1 faces to patch auto2

Assigned 1 faces to patch auto3

Assigned 69995 faces to patch auto4

Assigned 22 faces to patch auto5

Assigned 300 faces to patch auto6

End
Is there an alternative way to define the BCs location ?

Regards,

Florian

Last edited by Hiroshiman; July 31, 2013 at 14:23.
Hiroshiman 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
Oscillating Airfoil Poor Results at High k (reduced frequency) dancfd OpenFOAM Running, Solving & CFD 3 November 4, 2013 09:32
Transient Run - Output "Time" in partial results? evcelica CFX 2 May 16, 2012 22:36
OpenFOAM - Validation of Results Ahmed OpenFOAM Running, Solving & CFD 9 June 22, 2011 19:59
wind tunnel results vs fluent pixie Main CFD Forum 1 August 20, 2009 09:02
CFX cylinder or sphere benchmark results Mel CFX 1 August 8, 2005 19:47


All times are GMT -4. The time now is 03:05.