 |
CFD Review |
 |
 |
Site Sponsors |
 |
 |
Tell a Friend |
 |
 |
 |
|
Help this site to grow by sending a friend an
invitation to visit this site.
|
|
 |
 |
 |
CFD News by Email |
 |
 |
 |
|
Did you know that you can get today's CFD Review headlines mailed to your inbox?
Just log in and select Email Headlines Each Night on your User Preferences page.
|
|
 |
 |
| |
  |
| SGI Receives Pirelli Award for Scientific Visualization |
|
 |
  |
| Application: CFD Helps Find Cause of Catastrophic Failure in Thermal Oxidizer
|
|
 |
 |
Posted Fri May 17, 2002 @06:19PM
|
|
|
 |
 |
 |
By Thomas D. Foust, Michael Rynearson, Ryan D. McMurtrey, Lisa Harvego
Idaho National Engineering and Environmental Laboratory
Engineers at the Idaho National Engineering and Environmental Laboratory (INEEL) used computational fluid dynamics (CFD) analysis to determine the cause of a catastrophic failure in a recuperative flameless thermal oxidizer (RFTO), used for the destruction of hazardous compounds. When the unit's feed tubes melted, resulting in system failure, it was unclear whether the cause was a design flaw or operator error. Physical examination of the unit could not conclusively resolve the issue, so INEEL engineers were asked to recreate the failure scenario as a computer simulation. Working from data in the operation logs, they analyzed the last run of the oxidizer using CFD. The results clearly showed why the tubes melted. "The design of this particular model was such that there were recirculation eddies in the inlet plenum," explains Mike Rynearson, a Principal Engineer at INEEL. "These eddies caused below normal air flow into one of the feed tubes. That, combined with higher than normal propane levels at startup and the hot soak bed condition, caused the oxidation front to move into the low flow tube, causing it to overheat and fail. Once it melted, the others quickly followed.
|
|
 |
 |
  |
| After the Merger: HP Product Roadmaps |
|
 |
  |
| Education: PTC Offers Free Software to Educators
|
|
 |
|
|
 |
CFD Image Gallery |
 |
 |
Quick Links |
 |
 |
Older Stuff |
 |
|