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

adding temperature to simpleFoam

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

Like Tree31Likes

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 30, 2017, 22:30
Default
  #81
Member
 
Sugajen
Join Date: Jan 2012
Location: Tempe, USA
Posts: 52
Rep Power: 14
Sugajen is on a distinguished road
Hi again,

I am attaching my test case and the entire solver along with this post. There is something very crucial that I am going wrong that is causing the scalar solution to diverge. I am getting NaNs in every time step of the problem. But the pressure and velocity fields are looking good. Please do have a look and comment!

Thank you!
The cn term diverging in the code execution
Code:
Time = 0.074

smoothSolver:  Solving for Ux, Initial residual = 0.00219734, Final residual = 1.12576e-05, No Iterations 6
smoothSolver:  Solving for Uy, Initial residual = 0.01411, Final residual = 9.28678e-05, No Iterations 6
smoothSolver:  Solving for Uz, Initial residual = 0.0065224, Final residual = 2.29002e-05, No Iterations 6
GAMG:  Solving for p, Initial residual = 0.00881422, Final residual = 4.36809e-05, No Iterations 6
time step continuity errors : sum local = 3.02676e-06, global = 9.44383e-07, cumulative = 9.34871e-06
smoothSolver:  Solving for cn, Initial residual = 0.286678, Final residual = 0.0192822, No Iterations 1000
ExecutionTime = 43.38 s  ClockTime = 44 s

Time = 0.075

smoothSolver:  Solving for Ux, Initial residual = 0.00212959, Final residual = 1.06745e-05, No Iterations 6
smoothSolver:  Solving for Uy, Initial residual = 0.0137242, Final residual = 8.92657e-05, No Iterations 6
smoothSolver:  Solving for Uz, Initial residual = 0.0061777, Final residual = 2.19587e-05, No Iterations 6
GAMG:  Solving for p, Initial residual = 0.00850799, Final residual = 4.17185e-05, No Iterations 6
time step continuity errors : sum local = 2.88605e-06, global = 9.72972e-07, cumulative = 1.03217e-05
smoothSolver:  Solving for cn, Initial residual = 0.273087, Final residual = 0.0198734, No Iterations 1000
ExecutionTime = 45.44 s  ClockTime = 46 s

Time = 0.076

smoothSolver:  Solving for Ux, Initial residual = 0.0020727, Final residual = 1.01133e-05, No Iterations 6
smoothSolver:  Solving for Uy, Initial residual = 0.0133341, Final residual = 8.56583e-05, No Iterations 6
smoothSolver:  Solving for Uz, Initial residual = 0.00585649, Final residual = 2.0978e-05, No Iterations 6
GAMG:  Solving for p, Initial residual = 0.00821889, Final residual = 4.02368e-05, No Iterations 6
time step continuity errors : sum local = 2.77443e-06, global = 9.80575e-07, cumulative = 1.13023e-05
smoothSolver:  Solving for cn, Initial residual = 0.256031, Final residual = 0.0226206, No Iterations 1000
ExecutionTime = 47.58 s  ClockTime = 49 s

Time = 0.077

smoothSolver:  Solving for Ux, Initial residual = 0.0020286, Final residual = 9.555e-06, No Iterations 6
smoothSolver:  Solving for Uy, Initial residual = 0.0129335, Final residual = 8.19352e-05, No Iterations 6
smoothSolver:  Solving for Uz, Initial residual = 0.00555411, Final residual = 1.99756e-05, No Iterations 6
GAMG:  Solving for p, Initial residual = 0.00795094, Final residual = 3.91401e-05, No Iterations 6
time step continuity errors : sum local = 2.68237e-06, global = 9.69506e-07, cumulative = 1.22718e-05
smoothSolver:  Solving for cn, Initial residual = 0.241686, Final residual = 0.0271197, No Iterations 1000
ExecutionTime = 49.64 s  ClockTime = 51 s

Time = 0.078

smoothSolver:  Solving for Ux, Initial residual = 0.00199783, Final residual = 8.98516e-06, No Iterations 6
smoothSolver:  Solving for Uy, Initial residual = 0.0125206, Final residual = 7.81573e-05, No Iterations 6
smoothSolver:  Solving for Uz, Initial residual = 0.00526388, Final residual = 1.89463e-05, No Iterations 6
GAMG:  Solving for p, Initial residual = 0.00769432, Final residual = 3.80934e-05, No Iterations 6
time step continuity errors : sum local = 2.5859e-06, global = 9.51297e-07, cumulative = 1.32231e-05
smoothSolver:  Solving for cn, Initial residual = 0.237521, Final residual = 0.0297912, No Iterations 1000
ExecutionTime = 51.7 s  ClockTime = 53 s

Time = 0.079

smoothSolver:  Solving for Ux, Initial residual = 0.00197628, Final residual = 8.42215e-06, No Iterations 6
smoothSolver:  Solving for Uy, Initial residual = 0.0121026, Final residual = 7.44988e-05, No Iterations 6
smoothSolver:  Solving for Uz, Initial residual = 0.00498768, Final residual = 1.79099e-05, No Iterations 6
GAMG:  Solving for p, Initial residual = 0.00743783, Final residual = 3.67183e-05, No Iterations 6
time step continuity errors : sum local = 2.46585e-06, global = 9.34576e-07, cumulative = 1.41576e-05
smoothSolver:  Solving for cn, Initial residual = 0.235452, Final residual = 0.0325307, No Iterations 1000
ExecutionTime = 53.71 s  ClockTime = 55 s

Time = 0.08

smoothSolver:  Solving for Ux, Initial residual = 0.0019587, Final residual = 7.88607e-06, No Iterations 6
smoothSolver:  Solving for Uy, Initial residual = 0.011688, Final residual = 7.10823e-05, No Iterations 6
smoothSolver:  Solving for Uz, Initial residual = 0.00472905, Final residual = 1.68969e-05, No Iterations 6
GAMG:  Solving for p, Initial residual = 0.00717117, Final residual = 3.5029e-05, No Iterations 6
time step continuity errors : sum local = 2.32748e-06, global = 9.20884e-07, cumulative = 1.50785e-05
smoothSolver:  Solving for cn, Initial residual = 0.233661, Final residual = 0.0357598, No Iterations 1000
ExecutionTime = 55.9 s  ClockTime = 57 s
Attached Files
File Type: gz modifiedSimpleFoam.tar.gz (16.7 KB, 10 views)
Sugajen is offline   Reply With Quote

Reply

Tags
simplefoam, temperature

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
Calculation of the Governing Equations Mihail CFX 7 September 7, 2014 07:27
Adding a new temperature dependent viscositymodel? dgadensg OpenFOAM Programming & Development 10 May 22, 2010 06:47
Adding temperature equation in settlingFoam sachin OpenFOAM Running, Solving & CFD 2 March 31, 2010 04:21
Adding temperature field to InterFoam yapalparvi OpenFOAM Running, Solving & CFD 8 October 14, 2009 21:18
Adding coriolis forces in simplefoam Xabi OpenFOAM Running, Solving & CFD 1 April 24, 2009 05:43


All times are GMT -4. The time now is 13:11.