As an important step to understand plume-to-plume variations and plume-to-plume interactions, modeling community seeks to simulate internal flow for Spray G.
Initial work has been done by GM and initial findings have been reported. (1) CFD calculations show that deficit in discharge coefficient is equally attributed to both a velocity and area deficit. (2) The velocity distribution per hole is biased towards the side of the hole closest to the injector axis. (3) An instantaneous snapshot of discharge coefficient per hole shows variation.
However, additional investigations are required. To submit your meshes or for inquiries about the meshes contact Lyle Pickett.
The investigations needed include, but are not limited to, the following:
- Solicit various modeling approaches (1-fluid, 2-component, etc.)
- Increased mesh resolution
- Effect of plenum size
- Needle motion effects
- Internal-to-external nozzle flow coupling