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

Convergence problems with sonicFoam

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 18, 2014, 12:40
Question Convergence problems with sonicFoam
  #1
New Member
 
Jefferson Vieira
Join Date: Jul 2014
Location: Brazil/Scotland
Posts: 12
Rep Power: 12
Jefferson_dhv is on a distinguished road
I'm trying to simulate a NACA 0012 in transonic conditions to have a initial set up that I can further modify to run other airfoils in the same conditions.

I'm really in the beginning with OpenFOAM so at first I was in doubt about the solver to use, so reading some threads in the forum I saw that sonicFoam and rhoCentralFoam would be the best for a case like this.

As the simulation takes a lot of time to get to the steady state it's been hard to change parameters and identify by myself the problem, that is the non convergence of the case. So I would like some tips to achieve the convergence in my case and to help reducing the computational time required. For me it's been hard to find information about compressible solvers, so any resource provided would be helpful too.

Monitoring the results I could see that the value of CD was increasing and the value of CL was decreasing indefinitely.

The simulation was with 4 degrees aoa.

Here follows my set up

Mesh1
Mesh2

checkMesh

/0
alphat
epsilon
k
mut
P
T
U

/system
controlDict
fvSchemes
fvSolution


Thanks in advance,
Jefferson Vieira
Jefferson_dhv is offline   Reply With Quote

Reply

Tags
compressible, convergence, naca0012, sonicfoam, transonic


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
Gas-liquid vertical separator, problems with convergence juliom Main CFD Forum 0 October 5, 2011 21:20
Weak rotational flow - Convergence Problems Daggemann FLUENT 1 May 8, 2009 10:45
NACA0012 Convergence Problems StudentAndrew CFX 6 November 21, 2005 07:49
Convergence problems Simone Siemens 5 June 29, 2005 11:48
Convergence problems Chetan FLUENT 3 April 15, 2004 20:13


All times are GMT -4. The time now is 13:33.