Topic Author
Posts: 7
Joined: Wed Dec 19, 2012 1:09 pm

Inlet Flow Distortion And Inlet Vortex

Fri Dec 21, 2012 7:47 pm

I really want to know the concept of inlet flow distortion. Please can anyone explain me the concept in a simple way? Also, how is inlet vortex formed?
Posts: 188
Joined: Sun Jul 09, 2006 11:32 am

RE: Inlet Flow Distortion And Inlet Vortex

Fri Dec 21, 2012 8:10 pm

Imagine a stream of water in a channel flowing uniformly. This is undistorted flow. Now imagine the stream stops and starts. Now imagine also a block placed at the edge of the stream. Now the flow behind the block contains eddies, and swirls and is not constant with time.

The stopping and starting is wind gust variation. The block at the side creates an effect like the edge of the inlet, when the wind approaches from the side. The front of the engine sees eddies, swirls (turbulence) and non-constant (unsteady) flow.

Engines are tested to demonstrate resistance to this. And they are often tested with a screen to eliminate this distortion, when it is specifically important to have uniform inlet conditions. See here at 1:20

The most common type of inlet vortex is formed when the inlet is near enough to the ground that the inlet flow coupled with a crosswind shear flow forms a vortex. There must be shearing (cross flow) to initiate a vortex. Just like a tornado is formed by shear flow. See here
My views are not necessarily the views of the GE Company

Who is online

Users browsing this forum: Bing [Bot], eamondzhang, Stitch, Taxi645 and 1 guest

Popular Searches On

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos