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

No converge solver massBuoyantBoussinesqSimpleFoam

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 5, 2015, 02:33
Default No converge solver massBuoyantBoussinesqSimpleFoam
  #1
New Member
 
Jordi
Join Date: Apr 2015
Location: Wageningen
Posts: 5
Rep Power: 11
mol018 is on a distinguished road
First, I have to mention that I started a few weeks ago with OpenFOAM, so I'm not an expert in OpenFOAM. In order to be able to evaluate HVAC processes in a room, including humidity and heat transfer, I downloaded the massBuoyantBoussinesqSimpleFoam solver (see: http://openfoamwiki.net/index.php/Co...nesqSimpleFoam). To be able to run the tutorial of this solver in OpenFOAM 2.3.1, I adapted the following boundary conditions for group ".*" :
- For kappat: alphatJayatillekeWallFunction instead of kappatJayatillekeWallFunction;
- For p_rgh: zeroGradient instead of buoyantPressure;

Now, the solver runs without problems, but does not converge. Can somebody help me with this problem? For detailed information about the solving process, I attached the log file.

Thanks in advance!
Attached Files
File Type: txt log_part.txt (64.7 KB, 10 views)
mol018 is offline   Reply With Quote

Old   June 5, 2015, 04:40
Default Please help!!
  #2
New Member
 
Jordi
Join Date: Apr 2015
Location: Wageningen
Posts: 5
Rep Power: 11
mol018 is on a distinguished road
Who can help me?
Any help will be really much appreciated !!
mol018 is offline   Reply With Quote

Old   June 5, 2015, 05:42
Default
  #3
Senior Member
 
Arjun
Join Date: Mar 2009
Location: Nurenberg, Germany
Posts: 1,283
Rep Power: 34
arjun will become famous soon enougharjun will become famous soon enough
Quote:
Originally Posted by mol018 View Post
First, I have to mention that I started a few weeks ago with OpenFOAM, so I'm not an expert in OpenFOAM. In order to be able to evaluate HVAC processes in a room, including humidity and heat transfer, I downloaded the massBuoyantBoussinesqSimpleFoam solver (see: http://openfoamwiki.net/index.php/Co...nesqSimpleFoam). To be able to run the tutorial of this solver in OpenFOAM 2.3.1, I adapted the following boundary conditions for group ".*" :
- For kappat: alphatJayatillekeWallFunction instead of kappatJayatillekeWallFunction;
- For p_rgh: zeroGradient instead of buoyantPressure;

Now, the solver runs without problems, but does not converge. Can somebody help me with this problem? For detailed information about the solving process, I attached the log file.

Thanks in advance!
These types of calculation suffer from convergence issues because velocity pressure coupling could be weak.

Try refining the mesh because so far experience says that this seems to help.
arjun is offline   Reply With Quote

Old   June 5, 2015, 05:50
Default
  #4
New Member
 
Jordi
Join Date: Apr 2015
Location: Wageningen
Posts: 5
Rep Power: 11
mol018 is on a distinguished road
Thanks for your reply, I will refine the mesh and try the solver again!
mol018 is offline   Reply With Quote

Old   June 8, 2015, 06:12
Default
  #5
New Member
 
Jordi
Join Date: Apr 2015
Location: Wageningen
Posts: 5
Rep Power: 11
mol018 is on a distinguished road
I refined the mesh. However, the solver is still not converging .
Can anybody help me with this problem?

Thanks in advance!
mol018 is offline   Reply With Quote

Old   March 5, 2016, 03:25
Default
  #6
New Member
 
Dasein
Join Date: Mar 2015
Posts: 21
Rep Power: 11
Tellur is on a distinguished road
Hi I was wondering if you had any success with the current solver.

I am planning to use it myself for assessing humidity in interior spaces. I am not sure how it performs and how it's method can be considered proper.

I was also wondering if anyone has been able to compile this for OpenFoam 3.0.1.

Thanks in advance!

Tellur.
Tellur is offline   Reply With Quote

Reply

Tags
converge, hvac

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
[ANSYS Meshing] Help with element size sandri_92 ANSYS Meshing & Geometry 14 November 14, 2018 07:54
EMMS drag model UDF NAD Fluent UDF and Scheme Programming 26 November 19, 2017 07:49
Quarter Burner mesh with periosic condition SamCanuck FLUENT 2 August 31, 2011 11:34
Working directory via command line Luiz CFX 4 March 6, 2011 20:02
why the solver reject it? Anyone with experience? bearcat CFX 6 April 28, 2008 14:08


All times are GMT -4. The time now is 02:29.