The Properties of the Flow in an Elastic Duct PUBLIC ACCESS

[+] Author Affiliations
You-Hai Wei, Xi-Chang Mao, Ren Fang

Beijing Institute of Aeronautics and Astronautics

Paper No. 85-IGT-69, pp. V001T02A024; 8 pages
  • ASME 1985 Beijing International Gas Turbine Symposium and Exposition
  • Volume 1: Aircraft Engine; Turbomachinery
  • Beijing, People’s Republic of China, September 1–7, 1985
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7942-9
  • Copyright © 1985 by ASME


The flow in an elastic duct has some special properties. The speed of sound in this kind of flow is discovered to be smaller than in the flow in a rigid duct. Since the speed of sound decreases, flows which include area change, friction, heat transfer and mass addition reach the critical condition at Mach number less than one (M=1). It is particularly interesting that in a flow with area change the critical section doesn’t coincide with the minimum section. The main property of the flow in an elastic duct, that is the speed of sound being smaller than the traditional one, has been proved by experiment.

Copyright © 1985 by ASME
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