|
[Sponsors] |
March 23, 2008, 10:04 |
Smooth Grid Error! Help
|
#1 |
Guest
Posts: n/a
|
Everybody! I am a newbie in Gambit and Fluent.
When I used smooth mesh option in Gamibt to improve my meshing, I got a negative volume, so I import the unsmoothen mesh into Fluent and use smooth/swap Grid option. After several smooth-swap steps, the supposed ever-decreasing "number faces swaped" begin to increase; at the same time, "Warning, non-positive volumes exist" comes out. Is "smooth" step always necessary? If so, is it necessary to get the "number faces swaped" decreased until it reaches zero? Here is the error message, some are : ---------------------------------------------------------------------------------------------------------- Welcome to Fluent 6.3.26 Copyright 2006 Fluent Inc. All Rights Reserved Loading "D:\appl_sw\Fluent.Inc\fluent6.3.26\lib\fl_s1119.d mp" Done. ..................... 4 smoothing iterations complete Number faces swapped: 619 Number faces visited: 5511 4 smoothing iterations complete Number faces swapped: 358 Number faces visited: 4020 4 smoothing iterations complete Number faces swapped: 179 Number faces visited: 3210 4 smoothing iterations complete Number faces swapped: 89 Number faces visited: 2823 4 smoothing iterations complete Number faces swapped: 52 Number faces visited: 2617 4 smoothing iterations complete Number faces swapped: 34 Number faces visited: 2489 4 smoothing iterations complete Number faces swapped: 21 Number faces visited: 2412 4 smoothing iterations complete Number faces swapped: 12 Number faces visited: 2358 4 smoothing iterations complete Number faces swapped: 15 Number faces visited: 2310 WARNING: non-positive volumes exist. 4 smoothing iterations complete WARNING: non-positive volumes exist. Number faces swapped: 9 Number faces visited: 2277 Interrupting... Done. > Interrupting... Done. ------------------------------------------------------------------------------------------------------------ |
|
March 24, 2008, 11:56 |
Re: Smooth Grid Error! Help
|
#2 |
Guest
Posts: n/a
|
Hi dear.......
as per my knowledge, If your geometry is very complex then you can use smooth the grid because during the meshing, by default it does smoothing of grid. After that If you want to go for smoothing option, then you go for "redomain" option in grid then u can smooth the grid or you can go for GRID adaptation option. If I am wrong for your desired solution, then I am sorry. But above option may be helpful for you Regards Devesh |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
smooth DTF surface | N.R. | CFX | 0 | July 25, 2007 14:45 |
ICEM 10 smooth transition error | Stephen | CFX | 3 | March 13, 2007 10:23 |
smooth adaptive grid refinement | Wouter Harteveld | FLUENT | 0 | November 10, 2005 12:21 |
Smooth Grid | Gernot | FLUENT | 0 | August 19, 2005 17:00 |
smooth the joint? | zhang junmei | FLUENT | 0 | September 12, 2001 11:23 |