2. A nozzle is a device designed to convert a high pressure, low velocity flow into a low pressure, high velocity flow. (A diffuser does the opposite.) V2 > V1 P2 < P1 V2 < V1 P2 > P1 For example, jet engines typically exhaust the combustion gases through a nozzle to yield a thrust. A nozzle on the end of a garden hose yields a high velocity stream so that I can water the other side of my garden. Nozzle Diffuser Air at 50 °C, 250 kPa enters a nozzle through a cross sectional area of 0.3 m² with a velocity of 1800 m/s The air leaves the nozzle with a velocity of 250 m/s and a pressure of 100 kPa. It is safe to assume that the air behaves as an ideal gas with constant specific heats, evaluated at room temperature. (That is, c, = 1.005 kJ/kg-°C.) Assume steady state flow and that heat transfer is negligible, determine a. the mass flow rate of the air through the nozzle b. the exit area of the nozzle c. the air temperature at the nozzle exit

2. A nozzle is a device designed to convert a high pressure, low velocity flow into a low pressure, high velocity flow. (A diffuser does the opposite.) V2 > V1 P2 < P1 V2 < V1 P2 > P1 For example, jet engines typically exhaust the combustion gases through a nozzle to yield a thrust. A nozzle on the end of a garden hose yields a high velocity stream so that I can water the other side of my garden. Nozzle Diffuser Air at 50 °C, 250 kPa enters a nozzle through a cross sectional area of 0.3 m² with a velocity of 1800 m/s The air leaves the nozzle with a velocity of 250 m/s and a pressure of 100 kPa. It is safe to assume that the air behaves as an ideal gas with constant specific heats, evaluated at room temperature. (That is, c, = 1.005 kJ/kg-°C.) Assume steady state flow and that heat transfer is negligible, determine a. the mass flow rate of the air through the nozzle b. the exit area of the nozzle c. the air temperature at the nozzle exit

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Concept explainers

Applied Fluid Mechanics

A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.

Question

2. A nozzle is a device designed to convert a high pressure,
low velocity flow into a low pressure, high velocity flow.
(A diffuser does the opposite.)
V2 > V1
P2 < P1
V2 < V1
P2 > P1
For example, jet engines typically exhaust the
combustion gases through a nozzle to yield a thrust. A
nozzle on the end of a garden hose yields a high velocity
stream so that I can water the other side of my garden.
Nozzle
Diffuser
Air at 50 °C, 250 kPa enters a nozzle through a cross sectional area of 0.3 m² with a velocity of 1800 m/s.
The air leaves the nozzle with a velocity of 250 m/s and a pressure of 100 kPa.
It is safe to assume that the air behaves as an ideal gas with constant specific heats, evaluated at room
temperature. (That is, c, = 1.005 kJ/kg-°C.) Assume steady state flow and that heat transfer is negligible,
determine
a. the mass flow rate of the air through the nozzle
b. the exit area of the nozzle
c. the air temperature at the nozzle exit

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