Learning Forum

[Usman]

Hello ANSYS Community,

I am currently working on combustion simulations using ANSYS Forte and would like to clarify a point regarding nozzle modeling.

Could you please confirm whether ANSYS Forte uses a convergent, divergent, or convergent-divergent nozzle model by default for fuel injection, or does it depend entirely on the user-defined geometry? Additionally, how is the nozzle flow behavior handled internally within Forte if the geometry is not explicitly specified?

Any detailed insights or references would be greatly appreciated.

Thank you in advance for your assistance!

[jcooper]

Hi Usman:

The nozzle treatment in Forte depends on the type of Spray model you specify.  For a solid cone injector, a vena contracta is used, with inputs of injection pressure, nozzle diameter and massflow:

 

For more information on the nozzle treatment for each type of spray model, you can take a look at Chapter 6 of the Forte Theory manual: "Spray Models"

Regards,

Judy