@asgharali10me25 • 12 Oct, 2011
Can a mechanical engineering expert explain how a nozzle works?
@zaveri • 19 May, 2012 A nozzle is a device used for accelerating the fluid flow at the expense of the fluid pressure. it is basically a tapering tube, with the outlet diameter lesser than the inlet diameter. due this reduction in cross sectional area , the fluid experiences a pressure drop as it exits from the other end of the nozzle, but its flow velocity increases considerably.

there is however another device called the diffuser which is exactly the opposite of nozzle. it increases fluid pressure and deccelerates the flow.
@Nauman Khan • 19 May, 2012
zaveri
A nozzle is a device used for accelerating the fluid flow at the expense of the fluid pressure. it is basically a tapering tube, with the outlet diameter lesser than the inlet diameter. due this reduction in cross sectional area , the fluid experiences a pressure drop as it exits from the other end of the nozzle, but its flow velocity increases considerably.

there is however another device called the diffuser which is exactly the opposite of nozzle. it increases fluid pressure and deccelerates the flow.
How the speed varies in a convergent divergent nozzle
And also its pressure variation in a CD nozzle.
@zaveri • 21 May, 2012 nauman khan

the convergent divergent nozzle has 3 distinct sections, the entry, throat section and the exit.

at the entry , air velocity with mach number less than 1 enters, and as it flows through the throat section, the mach number becomes 1, (velocity increases). then it flows through the divergent portion of the nozzle and at its exit the mach number becomes greater than 1 (supersonic velocity is achieved).
@Nauman Khan • 21 May, 2012 😳

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