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

Laminar pipe flow

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

Like Tree1Likes
  • 1 Post By Randheer Yadav

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 17, 2005, 20:15
Default Laminar pipe flow
  #1
John
Guest
 
Posts: n/a
Hi,

Why do I get worse results compared whit analytical results when I refine the mesh? I'm simulating laminar pipe flow (Re=1400) and the residuls of all simulation are less then 1e-3. When I have a mesh with more cells the result seems to be of a turbulent flow. Thanks in advance. John
  Reply With Quote

Old   February 18, 2005, 04:10
Default Re: Laminar pipe flow
  #2
Randheer Yadav
Guest
 
Posts: n/a
please don't go for the residuals because they often create confusion. Better you check the results with analytical solutions. Here is one link of cornell university. You will find the "laminar flow in pipe". go through it and i hope u will be happy. http://instruct1.cit.cornell.edu/courses/fluent/ bye
arta likes this.
  Reply With Quote

Old   February 18, 2005, 14:37
Default Re: Laminar pipe flow
  #3
John
Guest
 
Posts: n/a
  Reply With Quote

Old   February 18, 2005, 14:42
Default Re: Laminar pipe flow
  #4
John
Guest
 
Posts: n/a
Thanks Randheer but what I'd like to know is why my results are getting worse compared whit analytical whit a mesh whit more cells. I think it should be the oposite. Thanks.
  Reply With Quote

Old   February 22, 2005, 03:38
Default Re: Laminar pipe flow
  #5
Randheer Yadav
Guest
 
Posts: n/a
Have u attached boundary layer on the inner surface of the pipe?. If not then please try it. I think this should give u more accurate solution than making grids finer.
  Reply With Quote

Old   February 24, 2005, 09:14
Default Re: Laminar pipe flow
  #6
manivannan
Guest
 
Posts: n/a
how will be affect cavitation for this flow

and also difference between laminar and turbulent flow
  Reply With Quote

Old   December 5, 2014, 06:00
Default
  #7
New Member
 
Arta Lotfi
Join Date: Dec 2014
Posts: 1
Rep Power: 0
arta is on a distinguished road
Quote:
Originally Posted by Randheer Yadav
;118037
please don't go for the residuals because they often create confusion. Better you check the results with analytical solutions. Here is one link of cornell university. You will find the "laminar flow in pipe". go through it and i hope u will be happy. http://instruct1.cit.cornell.edu/courses/fluent/ bye
hi,
could you mail this file for me please? , i cant open it
thanks
arta 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
Boundary conditions of laminar flow in pipe alireza.glz OpenFOAM 4 May 27, 2019 06:03
Using a turbulent model when the flow is entirely laminar. mwhyte FLUENT 1 June 7, 2012 11:35
gravitational acceleration in laminar pipe flow atmcfd ANSYS 0 January 4, 2010 23:19
Flow laminar and stationary of water in a pipe manuel OpenFOAM Running, Solving & CFD 6 March 24, 2007 19:23
First steps - laminar flow in a pipe Maria Phoenics 8 November 27, 2001 12:26


All times are GMT -4. The time now is 10:08.