Turbo machines like steam turbines, water turbines and gas turbines produce power by utilising the kinetic energy of the jets produced by passing high pressure steam, water and gas through the devices called nozzles. Corresponding to the fluids used, the nozzles are called steam nozzles, water nozzles and gas nozzles.
These nozzles serve two purposes:
(1) To convert pressure energy and thermal energy into kinetic energy and
(2) To direct the fluid jet at the specific angle known as nozzle angle.
A nozzle is a device, a duct of varying cross-section area in which a steadily flowing fluid can be made to accelerate by a pressure drop along the duct.
So when a fluid flows through a nozzle, its velocity increases continuously and pressure decreases continuously.
This article comes from thermal-engineering edit released