Mixer And Nozzle Process Description
Mixer
The hot air that is forced out of the combustor and through the turbine continues to exit the engine at the rearward. Before exiting however, this air must be mixed with the cooler bypass air that did not go through the compressor and combustor. These two airstreams are mixed in order to quiet the engine.
To understand how air can create noise, first consider the way water splashes and makes noise when a wave crashes. In the same way, when two different air streams traveling at extremely high speeds and at different temperatures collide with one another, noise is produced. In addition to the air streams colliding, the air also collides with the components of the engine and nacelle. Another example of air making noise is when wind hits a house. Even in a wind storm with small wind speeds, wind makes rushing and a grumbling noise against the outside walls of a house.
In order to mix the two air streams, the mixer directs the air escaping from the combustor and......
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