CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > CFX

Modelling cylinder in CFX

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 5, 2008, 02:28
Default Modelling cylinder in CFX
  #1
Ken
Guest
 
Posts: n/a
Hi,

Does anyone knows any good examples or tutorials or has any idea on how to model a cylinder using CFX ?

I am planning to start with a 2d model first before going to 3d model, is that a good idea? or they are totally different?
  Reply With Quote

Old   February 5, 2008, 08:27
Default Re: Modelling cylinder in CFX
  #2
jakjak
Guest
 
Posts: n/a
Can you be more specific? what kind of flow condition you are looking to simulate with a cylinder? e.g. flow inside a cylinder? flow across/along a cylinder??
  Reply With Quote

Old   February 5, 2008, 19:58
Default Re: Modelling cylinder in CFX
  #3
Ken
Guest
 
Posts: n/a
i am looking on flow around a cylinder, first with 2d cylinder (which is basically a cylinder) then with a 3d cylinder, which will include free surface effects. Any nice examples or tips on doing these?

Will really appreciate if you can help.

Thanks
  Reply With Quote

Old   February 6, 2008, 06:47
Default Re: Modelling cylinder in CFX
  #4
Nathan
Guest
 
Posts: n/a
Ken

one tip - in order to capture unsteady vortex shedding (in 2D) I found it was sometimes necessary to provide a perturbation - e.g. by using a step function in CEL to set up an asymmetric initial condition.

Nathan
  Reply With Quote

Old   February 6, 2008, 12:12
Default Re: Modelling cylinder in CFX
  #5
Dre
Guest
 
Posts: n/a
If you are interested in vortex shedding, I wasn't able to get any with a turbulent flow. However, laminar works nicely.
  Reply With Quote

Old   February 6, 2008, 12:36
Default Re: Modelling cylinder in CFX
  #6
Nathan
Guest
 
Posts: n/a
I've modelled vortex shedding in turbulent flow using the k-epsilon model, if I remember correctly.

  Reply With Quote

Old   February 12, 2008, 22:02
Default Re: Modelling cylinder in CFX
  #7
Ken
Guest
 
Posts: n/a
Do you still have the CFX files? Did you do that in 3d? Will really appreciate it if i can have the files by sending them to my email.... <kky_911@hotmail.com>
  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
benchmark: flow over a circular cylinder goodegg Main CFD Forum 12 January 22, 2013 12:47
Modelling a cylinder in a tank egge24 FLUENT 5 September 10, 2011 18:39
Pros and Cons for CFX, CFdesign, COMSOL Val Main CFD Forum 3 June 10, 2011 02:20
CFX cylinder or sphere benchmark results Mel CFX 1 August 8, 2005 18:47
Multiphase modelling in CFX sam CFX 2 July 12, 2003 01:17


All times are GMT -4. The time now is 18:57.