Comparisons of transition prediction using PSE-chem to measurements for a shock tunnel environment

Matthew MacLean, Erik Mundy, Timothy Wadhams, Michael Holden, Heath Johnson, Graham Candler

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Scopus citations

Abstract

Predictions from the STABL code have been used to make comparisons to two series of fundamental transition experiments in a large-scale shock tunnel environment by solving the parabolized stability equations (PSE) to predict laminar-turbulent transition onset using a semi-empirical eN correlation. The two sets of experimental data were obtained at duplicated enthalpy Mach 10 conditions for slender geometries where transition is dominated by second-mode instability. The first experiment considered is a 7° cone with sharp and blunt nosetips where the surface pressure gradient is zero and the second is an axisymmetric compression surface with a significant adverse pressure gradient acting upon the flow. The PSE analysis has predicted N-factor growth between 5.2 and 8.6 at the measured transition station for these cases, demonstrating a range of instability conditions describing the physical phenomena. The use of the Ree/ME criterion is also explored, including examples on the axisymmetric compression surface where a low value indicating early transition shows the opposite trend to the more physically accurate PSE solution that indicates larger N-factor growth.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - 37th AIAA Fluid Dynamics Conference
Pages2281-2298
Number of pages18
StatePublished - 2007
Event37th AIAA Fluid Dynamics Conference - Miami, FL, United States
Duration: Jun 25 2007Jun 28 2007

Publication series

NameCollection of Technical Papers - 37th AIAA Fluid Dynamics Conference
Volume3

Other

Other37th AIAA Fluid Dynamics Conference
CountryUnited States
CityMiami, FL
Period6/25/076/28/07

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