What is divergent nozzle?

What is divergent nozzle?

A de Laval nozzle (or convergent-divergent nozzle, CD nozzle or con-di nozzle) is a tube that is pinched in the middle, making a carefully balanced, asymmetric hourglass shape. Because of this, the nozzle is widely used in some types of steam turbines and rocket engine nozzles.

What is a nozzle diffuser?

A nozzle is a device which accelerates fluid. During this process, velocity of fluid increases with decreasing pressure. A diffuser is a device which slows down fluid. That means, velocity of fluid decreases with increasing pressure.

What is the difference between convergent nozzle and divergent nozzle?

Nozzles can be described as convergent (narrowing down from a wide diameter to a smaller diameter in the direction of the flow) or divergent (expanding from a smaller diameter to a larger one).

What is the function of diffuser?

The diffuser is an important element of a compressor or pump. Its purpose is to reduce the velocity of the flow leaving the impeller resulting in an increase in pressure. The diffuser can be simply depicted as a nonrotating channel whose flow area increases in the direction of flow (Figure 7.7).

Why are convergent-divergent nozzles used?

Convergent-divergent type of nozzles are mostly used for supersonic flows because it is impossible to create supersonic flows (mach number more than one) in convergent type of nozzle and therefore it restricts us to a limited amount of mass flow through a particular nozzle.

What are the different types of nozzles?

Nozzle

• Nozzle.
• The Nozzle Tip is one of the most important and least expensive part of a spraying system. Adjustable nozzle.
• Double swirl spray nozzle.
• Selecting a spray nozzle.
• Hollow cone nozzles-Disc and core type.
• Flat fan nozzles.
• Floodjet nozzles.
• Adjustable nozzles.

What is nozzle and types?

Types of Nozzles: It is used in a case where the backpressure is equal to or greater than the critical pressure ratio. Divergent Nozzle: The cross-sectional area of the divergent nozzle increases continuously from its entrance to exit.

What is the principle of nozzle?

When a flow nozzle is placed in a pipe carrying whose rate of flow is to be measured, the flow nozzle causes a pressure drop which varies with the flow rate. This pressure drop is measured using a differential pressure sensor and when calibrated this pressure becomes a measure of flow rate.

Does nozzle increase pressure?

In a convergent nozzle, there is an increase in velocity and a decrease in pressure, but we know that pressure is inversely proportional to area. To maintain a constant amount of fluid moving through the restricted portion of the nozzle, the fluid must move faster.

How do mist diffusers work?

An electric, ultrasonic, diffuser dispenses essential oils into the air through vibrations of a plate which causes ultrasonic waves, creating microscopic particles of oils which disperse into the air.

What is another name of diverging nozzle?

A nozzle is a relatively simple device, just a specially shaped tube through which hot gases flow. Ramjets and rockets typically use a fixed convergent section followed by a fixed divergent section for the design of the nozzle. This nozzle configuration is called a convergent-divergent, or CD, nozzle.