 |
 |
|
|
|
|
||||||||||||||||||||||||
|
|
      |
||||||||
|
< Back
|
 |
 |
||||||
Windbox Air Flow Models |
||||||||
|
Coen uses Computational Fluid Dynamics (CFD) to evaluate flow patterns in complex windbox configurations. Through many years of experience, Coen has found that proper air distribution to the burners is crucial to problem-free startups, stable and reliable operation, and the ability to meet low emissions restrictions. The Coen R&D Department reviews every multi-burner windbox design, and will perform CFD modeling of the windbox if necessary. Solutions can be obtained using either 2D or 3D geometries, depending on the level of complexity. CFD can compute pressure and velocity information for the interior of the windbox, which can then be used to optimally position baffles and turning vanes. It can also be used to determine the effects of various inlet conditions including unusual entry angles, swirl, or thermal/species mixing.
This windbox was evaluated to determine if splitters or baffles were required to control the air flow. Results of the analysis indicated that only a 4% imbalance existed between the left and right burners, without any baffles at all. When this application was started up, field results confirmed the analytical predictions (a 3% imbalance was measured) and the startup was trouble-free.
This windbox was also evaluated to determine if splitters or baffles were required. Results of the analysis showed that several flat plates in the positions shown above were necessary to deliver balanced and swirl-free flow to the burners. CFD Features Used in These Models:
|
||||||||
 |
|
|
|
|
|
|
|
|
