# Helium expands in a nozzle from (0.8 mathrm{MPa}, 500 mathrm{~K}), and negligible velocity to (0.1 mathrm{MPa}). Calculate

## Question:

Helium expands in a nozzle from \(0.8 \mathrm{MPa}, 500 \mathrm{~K}\), and negligible velocity to \(0.1 \mathrm{MPa}\). Calculate the throat and exit areas for a mass flow rate of \(0.34 \mathrm{~kg} / \mathrm{s}\), assuming the nozzle is isentropic. Why must this nozzle be convergingdiverging? Answers: \(5.96 \mathrm{~cm}^{2}, 8.97 \mathrm{~cm}^{2}\)

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**Related Book For**

## Fluid Mechanics Fundamentals And Applications In SI Units

**ISBN:** 9789814821599

4th Edition

**Authors:** Yunus Cengel, John Cimbala