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

weird looking yPlus graph

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 14, 2012, 08:54
Default weird looking yPlus graph
  #1
Member
 
Robert Ong
Join Date: Aug 2010
Posts: 45
Rep Power: 7
rob3rt 0ng is on a distinguished road
Hi All,

I run a k-omega SST incompressible flow past a hemisphere (generated from setSet utility). I normally get the y+ values from the display screen, and a bit puzzled when see this graph. Could you suggest whether this make sense?

Here's my checkMesh results:
PHP Code:
Mesh stats
    points
:           1084753
    faces
:            2854735
    internal faces
:   2821055
    cells
:            885214
    boundary patches
5
    point zones
:      0
    face zones
:       0
    cell zones
:       2

Overall number of cells of each type
:
    
hexahedra:     776644
    prisms
:        0
    wedges
:        0
    pyramids
:      0
    tet wedges
:    0
    tetrahedra
:    0
    polyhedra
:     108570

Checking topology
...
    
Boundary definition OK.
    
Point usage OK.
    
Upper triangular ordering OK.
    
Topological cell zip-up check OK.
    
Face vertices OK.
    
Face-face connectivity OK.
    
Number of regions(OK).

Checking patch topology for multiply connected surfaces ...
    
Patch               Faces    Points   Surface topology                  
    openwater           12800    13122    ok 
(non-closed singly connected)  
    
seafloor            6480     7031     ok (non-closed singly connected)  
    
watersurface        4800     4941     ok (non-closed singly connected)  
    
inlet               4800     4941     ok (non-closed singly connected)  
    
outlet              4800     4941     ok (non-closed singly connected)  

Checking geometry...
    
Overall domain bounding box (-0.2 -0.0249 -0.2) (0.2 0.1 0.25)
    
Mesh (non-empty, non-wedgedirections (1 1 1)
    
Mesh (non-empty) directions (1 1 1)
    
Boundary openness (-3.58035e-17 3.94272e-15 -6.20997e-17OK.
    
Max cell openness 3.11701e-16 OK.
    
Max aspect ratio 22.2347 OK.
    
Minumum face area 2.63529e-08Maximum face area 3.75002e-05.  Face area magnitudes OK.
    
Min volume 2.19607e-11Max volume 1.68703e-07.  Total volume 0.022482.  Cell volumes OK.
    
Mesh non-orthogonality Max84.1114 average9.80152
   
*Number of severely non-orthogonal faces7060.
    Non
-orthogonality check OK.
  <<
Writing 7060 non-orthogonal faces to set nonOrthoFaces
    Face pyramids OK
.
    
Max skewness 0.341033 OK.

Mesh OK.

End 
Regards,
Robert
Attached Images
File Type: png y+.png (8.1 KB, 30 views)
rob3rt 0ng is offline   Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to calculate Y+( Yplus) mohammad Main CFD Forum 3 January 12, 2011 00:23
which yplus (SST) sanchezz CFX 17 January 11, 2010 05:45
How to plot different model's graph on a graph? echo CD-adapco 1 April 28, 2006 03:54
X-Y plot of Yplus in Fluent 5.3 Luo FLUENT 24 April 11, 2000 06:07
heat transfer coefficients with "bad" yplus Andrew Main CFD Forum 4 April 8, 1999 04:43


All times are GMT -4. The time now is 20:28.