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

Extreme value of field data

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   March 2, 2018, 05:53
Unhappy Extreme value of field data
  #1
Member
 
Join Date: Jan 2018
Location: Malaysia
Posts: 58
Rep Power: 8
jiahui_93 is on a distinguished road
Hi everyone, I ran a simulation using pimpleDyMFoam. The results didnt show very high residuals or bounding error, but the paraview results showed extreme value range of field data (attached picture).

Code:
Courant Number mean: 1.238451 max: 2455.668
Time = 0.5

DICPCG:  Solving for cellMotionUy, Initial residual = 5.690536e-09, Final residual = 5.690536e-09, No Iterations 0
PIMPLE: iteration 1
smoothSolver:  Solving for p, Initial residual = 0.026853, Final residual = 0.009683854, No Iterations 10
time step continuity errors : sum local = 0.2074094, global = 2.314394e-17, cumulative = 4.727372e-16
smoothSolver:  Solving for p, Initial residual = 0.009831345, Final residual = 0.009831345, No Iterations 0
time step continuity errors : sum local = 0.207414, global = -1.020136e-17, cumulative = 4.625358e-16
PIMPLE: iteration 2
smoothSolver:  Solving for p, Initial residual = 0.006127573, Final residual = 0.006127573, No Iterations 0
time step continuity errors : sum local = 0.1288116, global = 3.6686e-17, cumulative = 4.992218e-16
smoothSolver:  Solving for p, Initial residual = 0.006127573, Final residual = 0.001194937, No Iterations 50
time step continuity errors : sum local = 0.02511953, global = 1.954653e-17, cumulative = 5.187684e-16
smoothSolver:  Solving for epsilon, Initial residual = 0.06578633, Final residual = 1.678348e-07, No Iterations 1
smoothSolver:  Solving for k, Initial residual = 0.04470441, Final residual = 8.983061e-07, No Iterations 1
ExecutionTime = 1409.42 s  ClockTime = 1425 s

End
Eg, at t= 0.16
U [-2874.39, 2110.38] [0, 24218.3] [-2830.58, 2221.76]
p [-1.25611e+8, 5.76314e+7]
Capture.jpg

Based on my opinion, the U should have max of 20 m/s since my movingWall is moving at 20 m/s in ambient air, is it correct? Please correct me if I am wrong. I am a very newbie in this field.

Attached is the link to my case directory. This shows the settings I use.
https://www.dropbox.com/s/w1ji9xvdd3...Surf1.zip?dl=0

May I get some suggestion and advice on what setting i had done wrong or how to fix this? I would be grateful for your help. Thanks a lot for your time and help.
jiahui_93 is offline   Reply With Quote

Reply


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
Software for Wind Field Simulation based on LiDAR data around Wind Turbines davidebner Main CFD Forum 1 July 19, 2015 23:28
''unknown radialModelType type Gidaspow'' PROBLEM WITH THE BED TUTORIAL AndoniBM OpenFOAM Running, Solving & CFD 2 March 25, 2015 19:44
[Commercial meshers] fluentMeshToFoam multidomain mesh conversion problem Attesz OpenFOAM Meshing & Mesh Conversion 12 May 2, 2013 11:52
Access raw field data (scalars, vectors) on mesh haakon OpenFOAM Programming & Development 3 September 25, 2012 11:01
chtMultiRegionFoam - exchange data between flow field and temperature phsieh2005 OpenFOAM Running, Solving & CFD 0 February 7, 2012 10:16


All times are GMT -4. The time now is 19:45.