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Posted by : Asad Ali Arshad Friday, 2 March 2018








Ch-1 Thermo-II Week-3.pdf

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In this lecture we will discuss about.
  • What is a turbomachine?
  • Schematic of Jet Engine.
  • Nozzels

As you know nozzle is a duct of smoothly varying cross section area in which a steady flowing fluid can be made to accelerate by a pressure drop along the duct. e.g nozzles are used in steam and gas turbines, in jet engines, in rocket motors etc. 
In this lecture we will discuss the nozzle briefly.

  • Diffuser
When a fluid is decelerated in a duct, causing a rise in pressure along the stream. Its major applications are centrifugal pumps and ramjet.
  • We will also discuss diffuser briefly.
  • We have a long discussion on Nozzle Shape.
  • Convergent Divergent Nozzle.
  • Critical Pressure Drop
  • Critical Temperature Ratio
  • Critical Velocity
  • Maximum Mass Flow
  • Nozzle Off the design pressure ratio
  • Convergent Nozzle
  • Convergent Divergent Nozzle
  • Nozzle Efficency
  • Length of Nozzle
  • The Steam Nozzle
All of the above topics are discussed in detail in the above given slides.

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