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Transonic viscous inviscid interactions in a slender Laval nozzle
Author(s) -
Meyer Georg,
Kluwick Alfred
Publication year - 2010
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201010232
Subject(s) - inviscid flow , transonic , nozzle , mechanics , aerospace engineering , physics , geology , engineering , aerodynamics
Transonic, high Reynolds number flows through a Laval nozzle, which is so narrow that the classical boundary layer correction can no longer be considered to be an effect of higher order, are considered. As a consequence the properties of the inviscid core and the viscosity dominated boundary layer region can no longer be determined in subsequent steps but have to be calculated simultaneously. The resulting interaction problem for laminar flows in a small nozzle is presented for perfect gases. Representative solutions including the internal structure of pseudo‐shocks forming in the diffuser part of the nozzle and being strongly associated with the chocking phenomenon will be presented. The linear stability of the various flow regimes observed in the nozzle will be discussed. (© 2010 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)