|
[Sponsors] |
About the divergence when using unstructured mesh |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
June 17, 2008, 00:44 |
About the divergence when using unstructured mesh
|
#1 |
Guest
Posts: n/a
|
HI ALL,
I AM DOING A PROBLEM OF EXTERNAL FLOW ON A CYLINDER AT M=2 AND 10 DEGREE ANGLE OF ATTACK. I HAVE MADE A COMPLETE TET/HYBRID MESH. I KEPT THE CFL NO LOW TO 0.2 BUT AFTER 3000 ITERATIONS IT DIVERGED. THEN I RAN THE PROBLEM AGAIN AND INCREASED THE CFL NO SO THE DIVERGENCE CAME AT 1600 ITERATIONS. SECONDLY, BEFORE DIVERGENCE IT GAVE ME SO MANY WARNINGS LIKE TIME-STEP REDUCED IN 3 CELLS TEMPERATURE LIMITED TO 1 IN 2 CELLS IN ZONE 2 (DEFAULT-INTERIOR) ABS PRESSURE LIMITED TO 1 IN 3 CELLS IN ZONE 2 THE PROBLEM IS OF 2 MILLINON CELLS SO I RUN IT ON 3 COMPUTERS ON PARALLEL TELL ME HOW THE DIVERGENCE PROBLEM CAN BE SOLVED? |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Divergence problem - NOT the mesh | Carlos | FLUENT | 1 | August 2, 2008 09:38 |
About the divergence when using unstructured mesh | Shamoon | FLUENT | 2 | June 22, 2008 09:00 |
Structurted mesh and unstructured mesh | Wiroon | Main CFD Forum | 4 | July 1, 2005 04:41 |
Structurted mesh and unstructured mesh | Wiroon | FLUENT | 2 | June 28, 2005 09:40 |
divergence of moving mesh | ricklee | Siemens | 2 | June 27, 2005 03:53 |