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

forced convection on a cylinder

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 19, 2011, 12:08
Default forced convection on a cylinder
  #1
New Member
 
Maximilian Hauser
Join Date: Sep 2011
Posts: 9
Rep Power: 14
mountaineer is on a distinguished road
Hello,

I want to simulate a crosswise to flow to an heated cylinder and compare my results with a analytic solution. The cylinder is heated with a fixed value of 1000 W/m^2 and the air has at the inlet a temperature of 293 Kelvin. When I run the case, it will converge, but the results are nonsense. The velocity profile looks good, but the temperature on the cylinder are nearly the same as the surrounding fluid. In my analytic solution the temperature of the cylinder is about 457 Kelvin.

I've uploadete the case here: http://dl.dropbox.com/u/1445847/forced_convection.zip

Thanks for any help

greetings

Last edited by mountaineer; September 22, 2011 at 08:59. Reason: forgot the attachment
mountaineer is offline   Reply With Quote

Old   September 22, 2011, 14:45
Default
  #2
New Member
 
Maximilian Hauser
Join Date: Sep 2011
Posts: 9
Rep Power: 14
mountaineer is on a distinguished road
can anyone give me a hint?
mountaineer is offline   Reply With Quote

Old   September 27, 2011, 11:12
Default
  #3
Senior Member
 
Join Date: Mar 2009
Posts: 138
Rep Power: 17
camoesas is on a distinguished road
Hey Maximilian,

Which solver are you using? Where do you have find the specification for:

Code:
cylinder                                                                                                                                                                    
        {                                                                                                                                                                           
        type    compressible::turbulentHeatFluxTemperature;                                                                                                                         
        heatSource      flux;                                                                                                                                                       
        q       uniform 1000;                                                                                                                                                       
        K       basicThermo;                                                                                                                                                        
        KName   K;                                                                                                                                                                  
        value   uniform 460;                                                                                                                                                        
        }

I've been searching for something like that but not havent found anything neither in the tutorials nor in the UserGuide
camoesas is offline   Reply With Quote

Old   September 27, 2011, 11:30
Default
  #4
New Member
 
Maximilian Hauser
Join Date: Sep 2011
Posts: 9
Rep Power: 14
mountaineer is on a distinguished road
Hi,
I got the specification for this Bc from the source Code:

Code:
$FOAM_SRC//turbulenceModels/compressible/turbulenceModel/derivedFvPatchFields/turbulentHeatFluxTemperature/turbulentHeatFluxTemperatureFvPatchScalarField.H
I'm using the solver rhoSimpleFoam.


regards Maximilian
mountaineer 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
convection past cylinder Anna Main CFD Forum 1 January 20, 2008 21:33
Coupled vs Seg - Natural vs. Forced Convection Alex Siemens 5 December 12, 2007 05:58
help please with forced convection lucia FLUENT 3 September 7, 2007 17:59
heat convection in a forced fluid Daniele COMSOL 0 December 20, 2005 09:09
natural and forced convection Jan Main CFD Forum 4 November 30, 2005 23:44


All times are GMT -4. The time now is 13:02.