CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Pre-Processing

Internal Flow in an Arch

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 15, 2018, 16:54
Default Internal Flow in an Arch
  #1
New Member
 
Yuxi Jia
Join Date: Jun 2018
Posts: 1
Rep Power: 0
yjia2 is on a distinguished road
I'm pretty new to openFOAM, and need help setting up an internal flow problem.

I made a simple arch in ANSYS Fluent, and imported the mesh over to openFOAM. After setting up the problem, I obtained the results shown (see attached picture) - which shows the initial velocity at the inlet and outlet, and zero velocity everywhere else (on the walls) after 25s.

I'm assuming that this is because I'm seeing the velocities at the outside of the walls, which are zero, because the walls were all set to "noSlip". Unfortunately, I'm interested in the flow velocities and pressures inside the pipe, like the answers provided by ANSYS solvers.

I'm not sure how to solve/ visualise the internal flow, and I would appreciate any help. Please let me know if you need any of my code to deduce what I'm doing wrong.

Note: I went through the internal flow tutorial on The Foam House, but I don't think I can make a wedge and revolve it for my problem, due to the geometry.
Attached Images
File Type: png SimpleArch.png (20.7 KB, 6 views)
yjia2 is offline   Reply With Quote

Old   June 16, 2018, 01:58
Default
  #2
Senior Member
 
piu58's Avatar
 
Uwe Pilz
Join Date: Feb 2017
Location: Leipzig, Germany
Posts: 744
Rep Power: 15
piu58 is on a distinguished road
Thats no result, that is an image.

I recommend to Analyse the real values of the velocity with some tools, like sample.
__________________
Uwe Pilz
--
Die der Hauptbewegung überlagerte Schwankungsbewegung ist in ihren Einzelheiten so hoffnungslos kompliziert, daß ihre theoretische Berechnung aussichtslos erscheint. (Hermann Schlichting, 1950)
piu58 is offline   Reply With Quote

Old   June 16, 2018, 11:54
Default
  #3
Senior Member
 
anonymous
Join Date: Jan 2016
Posts: 416
Rep Power: 14
simrego is on a distinguished road
Hi!


If you have to visualize the flow inside the pipe, just create a slice in ParaView.
simrego is offline   Reply With Quote

Reply


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
About Some Concepts:Laminar flow, turbulent flow, steady flow and time-dependent flow Jing Main CFD Forum 8 October 5, 2018 18:02
Coupled wall for Interface/External Flow pass through internal flow Onurozcan FLUENT 0 December 16, 2015 15:15
Question Regarding Modelling Internal Flow Alteran CFX 1 September 4, 2013 13:07
Internal Flow with Heat Transfer plucas OpenFOAM 2 January 18, 2013 12:47
Advice on turbulence model for complex internal flow JPBodner Main CFD Forum 1 September 3, 2011 04:07


All times are GMT -4. The time now is 04:16.