Nitrogen is expanded isentropically in a nozzle from a pressure of 2000 kPa, at atemperature of 1000 K, to a pressure of 101 kPa. If the velocity of the nitrogen entering thenozzle is negligible, determine the exit nozzle area required for a nitrogen flow of 0.5 kg/s.Assume the nitrogen to behave as a perfect gas with constant specific heats, mean molecularmass of 28.0, and y 1.4.

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Answered: Nitrogen is expanded isentropically in…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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An ideal gas is to flow isentropically from a large tank where the air is maintained at a temperature and pressure of 59 °F and 76 psia to standard atmospheric discharge conditions in a way to achieve a maximal velocity. Describe in general terms the kind of duct involved and determine the duct exit Mach number and velocity in ft/s if the gas is air. The problem can be solved either using the isentropic relations or this figure. The isentropic relations are more accurate, but difficult to use unless you code them into a computer program. (a) What is the pressure ratio for the flow? (b) Is the exit flow subsonic, sonic, or supersonic? (c) What is the exit Mach number? (a) Pexit/Po= i (b) (c) Mexit =
Nitrogen enters a converging–diverging nozzle at 800 kPa and 400 K with a negligible velocity. Determine the critical velocity, pressure, temperature, and density in the nozzle. Use data from the tables. The properties of nitrogen are k = 1.4 and R = 0.2968 kJ/kg·K
Air flowing steadily in a nozzle experiences a normal shock at a Mach number of Ma = 2.6. The pressure and temperature of air are 52 kPa and 270 K, respectively. Now, helium undergoes a normal shock under the same conditions. Calculate the entropy changes of air and helium across the normal shock. The properties of air are R = 0.287 kJ/kg-K and cp= 1.005 kJ/kg-K, and the properties of helium are R=2.0769 kJ/kg-K and cp=5.1926 kJ/kg.K. The entropy change for air is The entropy change for helium is kJ/kg-K. kJ/kg-K.

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