Thermodynamics: An Engineering Approach 8th Edition

by Cengel, Yunus; Boles, Michael

Published by McGraw-Hill Education

ISBN 10: 0-07339-817-9

ISBN 13: 978-0-07339-817-4

Chapter 17 - Compressible Flow - Problems - Page 892: 17-75C

Answer

See explanation

Work Step by Step

Yes, the upstream flow has to be supersonic for an oblique shock to occur. No, the flow downstream of an oblique shock can be subsonic, sonic, and even supersonic.

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