CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > ANSYS Meshing & Geometry

[ICEM] Average cell size

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

Like Tree4Likes
  • 4 Post By PSYMN

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 9, 2010, 23:48
Default Average cell size
  #1
New Member
 
Annon
Join Date: Apr 2010
Posts: 18
Rep Power: 16
beguxa is on a distinguished road
I have a mesh of huge no of cells generated through ICEM-CFD. How to check average cell size in ICEM-CFD?

Thanks,
beguxa is offline   Reply With Quote

Old   June 7, 2010, 13:46
Default Mesh Quality Criterion and the Mesh Report
  #2
Senior Member
 
PSYMN's Avatar
 
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,663
Blog Entries: 1
Rep Power: 47
PSYMN has a spectacular aura aboutPSYMN has a spectacular aura about
Sorry I missed this one before... Hopefully you figured it out, but just in-case not and for others who may follow this thread...

First, you need to better define "element size", do you mean you want to know the average volume? Or the average Max Edge length per element? Once you know your criterion...

1) Look under Info => Mesh Report.

This will generate an HTML Mesh report that lists the histograms for all the checks. But if you look in the message window, you will see the summary for each histogram which includes the min, max and mean.

For example, here is a cut and past from the message window with a few quality checks, including volume, for my made up Tetra/Prism model ...

8795 elements with the "Volume" diagnostic
Total = 176000
Min = 0.613816, max = 5.23489, mean = 1.43805571347
8795 elements with the "Volume change" diagnostic
Min = 0.102187, max = 167.684, mean = 47.5945999407
10111 elements with the "Surface area" diagnostic
Total = 481229
Min = 0.801887, max = 0.999285, mean = 0.940109929078

2) You could also just go to the Edit Mesh Tab => Display Mesh Quality and choose the correct Quality Type Criterion from the pulldown...

Here is "Volume"

Min = 0.0680032, max = 107.979, mean = 20.0113700966
8795 elements with the "Volume" diagnostic
1316 elements for which this diagnostic is undefined
Total = 176000
Histogram of Volume values
102.58005 -> 107.979 : 1 (0.010%)
97.1811 -> 102.58005 : 1 (0.010%)
91.78215 -> 97.1811 : 0 (0.000%)
86.3832 -> 91.78215 : 1 (0.010%)
80.98425 -> 86.3832 : 1 (0.010%)
75.5853 -> 80.98425 : 7 (0.069%)
70.18635 -> 75.5853 : 9 (0.089%)
64.7874 -> 70.18635 : 14 (0.138%)
59.38845 -> 64.7874 : 34 (0.336%)
53.9895 -> 59.38845 : 53 (0.524%)
48.59055 -> 53.9895 : 118 (1.167%)
43.1916 -> 48.59055 : 195 (1.929%)
37.79265 -> 43.1916 : 464 (4.589%)
32.3937 -> 37.79265 : 2046 (20.235%)
26.99475 -> 32.3937 : 749 (7.408%)
21.5958 -> 26.99475 : 626 (6.191%)
16.19685 -> 21.5958 : 483 (4.777%)
10.7979 -> 16.19685 : 342 (3.382%)
5.39895 -> 10.7979 : 625 (6.181%)
0.0 -> 5.39895 : 3026 (29.928%)


And here is "Max Side"...

Min = 1.25297, max = 12.7411, mean = 6.43074868955
10111 elements with the "Max side" diagnostic
Histogram of Max side values
12.104045 -> 12.7411 : 8 (0.079%)
11.46699 -> 12.104045 : 39 (0.386%)
10.829935 -> 11.46699 : 95 (0.940%)
10.19288 -> 10.829935 : 154 (1.523%)
9.555825 -> 10.19288 : 390 (3.857%)
8.91877 -> 9.555825 : 703 (6.953%)
8.281715 -> 8.91877 : 1132 (11.196%)
7.64466 -> 8.281715 : 1017 (10.058%)
7.007605 -> 7.64466 : 2345 (23.193%)
6.37055 -> 7.007605 : 438 (4.332%)
5.733495 -> 6.37055 : 281 (2.779%)
5.09644 -> 5.733495 : 255 (2.522%)
4.459385 -> 5.09644 : 277 (2.740%)
3.82233 -> 4.459385 : 486 (4.807%)
3.185275 -> 3.82233 : 595 (5.885%)
2.54822 -> 3.185275 : 665 (6.577%)
1.911165 -> 2.54822 : 1064 (10.523%)
1.27411 -> 1.911165 : 166 (1.642%)
0.637055 -> 1.27411 : 1 (0.010%)
0.0 -> 0.637055 : 0 (0.000%)
ishan_ae, Sakun, aero_head and 1 others like this.
PSYMN 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
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 05:36
OF 1.6 | Ubuntu 9.10 (64bit) | GLIBCXX_3.4.11 not found piprus OpenFOAM Installation 22 February 25, 2010 13:43
fluent add additional zones for the mesh file SSL FLUENT 2 January 26, 2008 11:55
[Commercial meshers] Trimmed cell and embedded refinement mesh conversion issues michele OpenFOAM Meshing & Mesh Conversion 2 July 15, 2005 04:15
Warning 097- AB Siemens 6 November 15, 2004 04:41


All times are GMT -4. The time now is 10:55.