Where is convergent-divergent nozzle used?
Convergent – Divergent nozzles are used to increase the flow of gas to supersonic speeds (as in the case of rockets). Their cross-sectional area first decreases and then increases. The area where the diameter is minimum is called the throat.
What are convergent and divergent nozzles?
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).
Where is divergent nozzle used?
It is used to accelerate a compressible fluid to supersonic speeds in the axial (thrust) direction, by converting the thermal energy of the flow into kinetic energy. De Laval nozzles are widely used in some types of steam turbines and rocket engine nozzles. It also sees use in supersonic jet engines.
What are the convergent nozzle?
A convergent nozzle is a nozzle that starts big and gets smaller-a decrease in cross-sectional area. As a fluid enters the smaller cross-section, it has to speed up due to the conservation of mass. To maintain a constant amount of fluid moving through the restricted portion of the nozzle, the fluid must move faster.
What is the advantage of convergent-divergent nozzle to convergent nozzle?
In convergent-divergent type of nozzles we can increase the flow velocity much higher than sonic velocity that is why these type of nozzles have a wide applications such as propelling nozzles in jet engines or in air intake for engines working at high rpms.
Why CD nozzle is used?
To increase the velocity magnitude for momentum source in rotating power turbine, a compressible fluid e.g. steam could reach the supersonic flow through the convergent- divergent nozzle (CD-nozzle). A throat section, between inlet and outlet sections, controls the outlet Mach when velocity in sonic condition.
What is convergent-divergent?
Divergence generally means two things are moving apart while convergence implies that two forces are moving together. In the world of economics, finance, and trading, divergence and convergence are terms used to describe the directional relationship of two trends, prices, or indicators.
What is another name of converging nozzle?
Clarification: Another name of converging nozzle is Subsonic Nozzle.
What is a divergent nozzle?
[də′vər·jənt ′näz·əl] (design engineering) A nozzle whose cross section becomes larger in the direction of flow.
How does a convergent nozzle work?
This nozzle configuration is called a convergent-divergent, or CD, nozzle. In a CD nozzle, the hot exhaust leaves the combustion chamber and converges down to the minimum area, or throat, of the nozzle. The throat size is chosen to choke the flow and set the mass flow rate through the system.