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

[ANSYS Meshing] Is always finer mesh got better result?

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 4, 2012, 19:32
Default Is always finer mesh got better result?
  #1
New Member
 
Yangyang
Join Date: Aug 2011
Posts: 9
Rep Power: 14
zyy95900 is on a distinguished road
Hi everyone,

I try to simulate the effect of surface roughness in duct flow. I am using realizable k-e with enhanced wall treatment. Is always finer mesh got better result? I read fluent manul, y+ should be ~1. Is this arcurate if wall mesh are very fine (that said y+~0.1)? I don't consider the compute time and memory.

thanks
zyy95900 is offline   Reply With Quote

Old   May 7, 2012, 02:50
Default
  #2
Far
Super Moderator
 
Sijal
Join Date: Mar 2009
Location: Islamabad
Posts: 4,553
Blog Entries: 6
Rep Power: 54
Far has a spectacular aura aboutFar has a spectacular aura about
Send a message via Skype™ to Far
sometimes it introduces the errors in the solution for very fine near wall mesh nodes. check out the notes by F. mentor available on ANSYS website.
Far is offline   Reply With Quote

Reply

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
[snappyHexMesh] No layers in a small gap bobburnquist OpenFOAM Meshing & Mesh Conversion 6 August 26, 2015 10:38
Accuracy problem of HO schemes on unstructured mesh, HO scheme gives 1st order result gemini Main CFD Forum 12 December 27, 2011 22:01
[snappyHexMesh] snappyHexMesh won't work - zeros everywhere! sc298 OpenFOAM Meshing & Mesh Conversion 2 March 27, 2011 22:11
fluent add additional zones for the mesh file SSL FLUENT 2 January 26, 2008 12:55
basic of mesh refinement arya CFX 4 June 19, 2007 13:21


All times are GMT -4. The time now is 03:53.