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Higuera Antón, Francisco and Liñán Martínez, Amable (1993). Choking conditions for nonuniform viscous flows. "Physics of Fluids. A, Fluids Dynamics", v. 5 (n. 3); pp. 768-770. ISSN 0899-8213.
Title: | Choking conditions for nonuniform viscous flows |
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Author/s: |
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Item Type: | Article |
Título de Revista/Publicación: | Physics of Fluids. A, Fluids Dynamics |
Date: | 1993 |
ISSN: | 0899-8213 |
Volume: | 5 |
Subjects: | |
Faculty: | E.T.S.I. Aeronáuticos (UPM) |
Department: | Motopropulsión y Termofluidodinámica [hasta 2014] |
Creative Commons Licenses: | Recognition - No derivative works - Non commercial |
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The laminar viscous compressible flow of a gas in a pipe of -*constant cross section joining two reservoirs is considered. As it is well known, the pipe flow becomes independent of the discharge pressure if this is lower than a critical value. Then it is found that the parabolic equations describing the high Reynolds number flow in the interior of the pipe tend to develop a singularity at the outlet, where the limiting temperature and velocity profiles satisfy a criticality condition. The structure of the nonuniform flow near the outlet consists of an effectively inviscid vortical bulk region and a viscous boundary layer of low velocity, whose thickness tends to zero at the outlet. Matching between these two regions determines the strength of the singularity. This two-layered structure is thought to be generic for nonuniform viscous flows having to satisfy a no-slip'boundary condition; in particular, the thin viscous layer is universal.
Item ID: | 1377 |
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DC Identifier: | https://oa.upm.es/1377/ |
OAI Identifier: | oai:oa.upm.es:1377 |
Deposited by: | Biblioteca ETSI Aeronauticos |
Deposited on: | 19 Feb 2009 |
Last Modified: | 20 Apr 2016 06:48 |