Gas Turbines Exhaust Cone Assignment (Flow Simulation)

The exhaust nozzle is the very last part of a gas turbine engine, either immediately after the turbine section or the tail pipe and they play a very large role in performance. There are two basic types of exhaust nozzles; convergent and convergent-divergent (also know as a de Laval nozzle). Convergent ducts are only used in sub-sonic flows, while convergent-divergent ducts are used for sub-sonic/super-sonic flows.

From looking at the table the exhaust gas's enter the speed of sound range at 525.4 m/s (ORANGE). At this instant a normal shock-wave will occur. The critical pressure was calculated to be 109kpa (RED).We know that if the exit pressure is less than the critical pressure the duct has to have a convergent-divergent shape. This can be seen in the table in the area section (GREEN) and in the area graph.

The flow simulation displays the changes in: Pressure(Pa), Temperature(ᵒK), Velocity(m/s) and the Mach number.
The values used to calculate the simulation were taken from the table.

Category:

Education

Tags:

• graphics software
• solidworks
• solid works 2010
• solid works 2011
• flowsimulation
• flow simulation
• solidworks2010
• it carlow
• i.t carlow aircraft systems
• it carlow gas turbines
• gas turbines
• gasturbines
• jet engine
• jet pipe
• jet exhaust
• gas turbine exhaust
• adam karakurt
• pressure
• temperature
• velocity
• mach number
• jet
• de Laval nozzle
• convergent-divergent

[jamcalgary]

good vdo, how did you do it while in solid works floxpress it says the model openings needs to be closed from inlet and outlet with lids, thanks