The program "GasTurb Details" allows you to do some basic calculations with the same procedures used in GasTurb. Thus, you can study details like compressors, turbines, mixers, and nozzles independently of a cycle.

Two examples where you can benefit from GasTurb Details:

Mixer

It is very difficult to isolate the effect of a mixer on the performance of a turbofan because you cannot use the same turbomachinery for both the unmixed and the mixed flow engines. With "GasTurb Details" you can study the mixer alone and work out the thrust increase due to mixing.

Convergent-Divergent Nozzle

The flow in a convergent-divergent nozzle is calculated from conservation of energy, mass, and momentum. The results will be displayed as numbers in a table, as well as in a graphical format which shows the static pressure along the nozzle.

In the graph you can interactively modify the nozzle area ratio A₉/A₈ and the nozzle pressure ratio P₈/P_amb.  Start with a high pressure ratio and then increase the nozzle back pressure Pamb. You will see a vertical shock moving into the divergent part of the nozzle. When the nozzle pressure ratio is very low then the flow will be entirely subsonic.

Copyright © 2001 Joachim Kurzke