Learning Forum

[Ali]

Hi, 

 

I am simulating an aircraft with the engine running, which involves internal and external (engine) flows together. The aircraft is placed in a far-field domain with prescribed boundary conditions, while the engine inlet will have a different boundary condition applied. Both the external domain and the engine are in the same fluid medium (air).

 

My main questions are:

1. How should I model the computational domains? If I create a separate fluid volume inside the engine, the inlet and outlet become interfaces, which turn into internal boundaries in Fluent. How do I manage this appropriately for internal-external flow coupling?
2. How should I apply the boundary conditions correctly? I need to ensure the boundary conditions for the far-field and engine components are handled properly.
3. How do I prepare the geometry for this setup in SpaceClaim? Any suggestions on how to set up the computational domain in SpaceClaim? I want mesh and simulate in Fluent. 

I'm seeking guidance on the best practices for geometry preparation, domain setup, and boundary condition application in this type of simulation.

 

Regards,

Ali

[Rob]

To clarify you want to model the external aircraft geometry and the whole engine? How much detail do you want to model for both parts? 

Have a look in Learning on here and Fluent's tutorials for more general information. 

[Ali]

Yes, I want to model the geometry of external aircraft and the engine as a whole. Engine inlet with mass flow boundary condition, nothing else will be modeled at this stage. Later, I want to model the whole engine except combustion.