Tag: Nozzle

Today we will see here the steady flow energy equation for nozzle and diffuser with the help of this post. Finally we will also see here the applications of nozzle and diffuser.

Let us first see here the basic concepts of nozzle and diffuser

Nozzle is an engineering device which will accelerate the fluid and hence fluid velocity or kinetic energy of fluid will be increased while pressure of fluid will be reduced.

Diffuser is an engineering device which will decelerate the fluid and hence fluid velocity or kinetic energy of fluid will be decreased while pressure of fluid will be increased.

Applications of nozzle and diffuser

Nozzles and diffusers are normally used in various applications such as jet engines, rockets, garden hoses and spacecraft too.

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