CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

Help for a easy case

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 10, 2021, 12:14
Post Help for a easy case
  #1
New Member
 
Yann
Join Date: Feb 2021
Posts: 1
Rep Power: 0
YannLG is on a distinguished road
Hello !
I will explain my situation. I'm a beginner in OpenFOAM but i would like to create a simple case which is a rectangular parallelepiped(1m *15cm*15cm or in 2D 1m*15cm), four faces are closed and the two squares are openned. I think i have succed to create the mesh thanks to the cavity tutorial, (but i'm not really sure, espacially about the boundary conditions).


But now i really don't know which solver should i use, I would like to simulate the winds which is going through the tube at a speed of 15m/s (an incompressible and turbulent flow.


I'have also noticed that the version of OpenFOAM might create problems. I use the version 20.06 of OpenFOAM.


Could you please give me some advices about :


-The boundary conditions (what means inlet, outlet etc...),
-Which solver should i use for this kind of simulation (simplefoam, icofoam, etc...)?

-Which tutoriel is the closer of my situation?
-Where should i go to change the parameters (speed or pression, it is the 0 folder?)?


I'm sorry if my english is bad, i'm a french student.
Thank you in advance for helping me .
YannLG is offline   Reply With Quote

Old   February 10, 2021, 13:42
Default
  #2
New Member
 
Gonšalo Ramos Nobre
Join Date: Mar 2020
Posts: 4
Rep Power: 5
gonsanobre is on a distinguished road
Wish i could help with my comment,

-First, for the boundary conditions you have to change the 0 files in order to match the names on boundary conditions file of polymesh paste (is located on constant)
-After this i think the conditions depends on if you want walls influence on the flow or not, if thats the case you have very functions like (slip, noSlip, wallfunctions), you have to search on OpenFOAM dictionaries
-almost all the cavities cases are good for you case, so there are a lot of solvers that you can use.
-last, you have to know if you want to see turbulence or not, in the case you want to see turbelence, search for RAS or LES cases in cavities but if you want a specific case and it doesnt have the correct turbulence model, change it on turbulence properteis.

I wish i was usefull
gonsanobre is offline   Reply With Quote

Old   February 10, 2021, 16:36
Default
  #3
HPE
Senior Member
 
HPE's Avatar
 
Herpes Free Engineer
Join Date: Sep 2019
Location: The Home Under The Ground with the Lost Boys
Posts: 932
Rep Power: 12
HPE is on a distinguished road
Before diving into solving problems with OpenFOAM, I would spend few days on the following links to train my skills and knowledge.

Otherwise, please look at the turbulent flat plate tutorial (which sounds to me the most similar one to your case): https://develop.openfoam.com/Develop...ulentFlatPlate
HPE is offline   Reply With Quote

Reply

Tags
boundaries condition, solver

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
Shape optimizing the tunnel case with energy on zyao1 FLUENT 0 December 1, 2020 16:05
[General] Calculation of Cp in case of dynamic simulation. Metikurke ParaView 1 May 30, 2018 10:52
CFD Post - How to check for case in an expression pilakin ANSYS 0 September 26, 2014 05:44
Error reading new case montag dp FLUENT 5 September 15, 2011 07:00
TO CHAM.HOW I SET UP AN EASY SUPERSONIC CASE? USERPH Phoenics 9 April 3, 2005 16:07


All times are GMT -4. The time now is 19:01.