Thermodynamics: An Engineering Approach 8th Edition

Published by McGraw-Hill Education
ISBN 10: 0-07339-817-9
ISBN 13: 978-0-07339-817-4

Chapter 17 - Compressible Flow - Problems - Page 891: 17-50C

Answer

(a) No effect on velocity (b) No effect on pressure (c) No effect on mass flow rate

Work Step by Step

(a) No effect on velocity (b) No effect on pressure (c) No effect on mass flow rate In this situation, the flow is already choked initially, so further lowering of the back pressure does not change anything upstream of the nozzle exit plane.
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