The brayton cycle-aeronautical engineering, Other Engineering

Assignment Help:

The brayton cycle:

The working cycle of the gas turbine engine is similar to that of the four-stroke piston engine.  There is induction, compression, ignition and exhaust in both cases, although the process is continuous in a gas turbine.  Also, the combustion in a piston engine occurs at a constant volume, whilst in a gas turbine engine it occurs at a constant pressure.

900_The brayton cycle.png

The cycle, upon which the gas turbine engine functions, in its simplest form, is the Brayton cycle, which is represented by the pressure/volume diagram, shown in figure.

1713_The brayton cycle1.png

The air entering the engine is compressed.

  • Heat is added to the air by burning fuel at a constant pressure, thereby considerably increasing the volume of the resulting gas.
  • The gases resulting from combustion expand through the turbine, which converts some of the energy in the expanding gases into mechanical energy to drive the compressor.
  • The remainder of the expanding gases are propelled through the turbine and jet pipe back to the atmosphere where they provide the propulsive jet.

There are three main stages in the engine working cycle during which the changes discussed occur:

  • During compression. Work is done on the air. This increases the pressure and temperature and decreases the volume of air.
  • During combustion. Fuel is added to the air and then burnt. This increases the temperature and volume of the gas, whilst the pressure remains almost constant (the latter being arranged by design in a gas turbine engine).
  • During expansion. Energy is taken from the gas stream to drive the compressor via the turbine; this decreases the temperature and pressure, whilst the volume increases. The rapidly expanding gases are propelled through the turbine and jet pipe to give a final momentum that is much greater than the initial momentum; it is this change in momentum which produces the propulsive jet.

 

 

 

 


Related Discussions:- The brayton cycle-aeronautical engineering

Matlab, load flow analysis by fast decoupled method

load flow analysis by fast decoupled method

Thermodynamics of materials, outline five (5) areas where thermodynamics ca...

outline five (5) areas where thermodynamics can be applied in materials engineering

Bme, advantages and disadvantages oh hot and cold die working in the subjec...

advantages and disadvantages oh hot and cold die working in the subject of basic mechanical engineering

Auto cad, Do you provide help with Autocad assignments?

Do you provide help with Autocad assignments?

Market value, Calculate the market value of a firm with total assests of $1...

Calculate the market value of a firm with total assests of $105 million and $50 million of 10% perpetual debt in the capital structure. The firm''s cost of equity is 14% on the $55

Level indicator., i have a project to be completed, the project is, How to ...

i have a project to be completed, the project is, How to make a device which warns you when your water reservoir is full?? i want the name of device needed and the way to complete

Circuit, I am looking for a circuit similar to a schmitt trigger which use ...

I am looking for a circuit similar to a schmitt trigger which use a varying capacitive input and provided a varying frequency output.

Product applications of powder metallurgy, Q. Describe two major product ap...

Q. Describe two major product applications of powder metallurgy. Ans. Following are some typical applications of powder metallurgy.         (i) Refractory metal : P

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd