Vortex gen / APU question

[pitot_noob]

Hey Guys,

Would anyone be able to provide me with an accurate answer as to why we have vortex generators in front of an APU inlet?

Appreciate any help!

PN

[Desert185]

VG's control the boundary layer flow of air. This is probably to smooth/conform the air flow for the APU inlet.

[mad_jock]

Vortex generators re-energise the boundary layer and help prevent the flow from breaking away from the surface.

I presume the VG are there to ensure that the APU intake isn't prone to "stalling" with changes in wind strength and direction.

[pitot_noob]

Thanks!
Really appreciate the opinions!