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Geometry and Test-Time Effects on Hypervelocity Shock-Boundary Layer Interaction

Knisely, A. M. and Austin, J. M. (2016) Geometry and Test-Time Effects on Hypervelocity Shock-Boundary Layer Interaction. In: 54th AIAA Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics , Reston, VA, Art. No. 2016-1979. ISBN 978-1-62410-393-3. https://resolver.caltech.edu/CaltechAUTHORS:20190828-081824663

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Abstract

Experiments are carried out to address potential sources of discrepancies between experiments and simulations of shock-boundary layer interactions in hypervelocity flow: spanwise effects on shock interactions and flow separation, as well as flow field evolution and potential unsteadiness. A double-wedge and double-cone geometry are studied in two hypersonic impulse facilities, the HET and T5. The test conditions in the two facilities are selected to have the same nominal stagnation enthalpy but different unit Reynolds number. For the double-wedge model, the extent of the finite edge effects on shock structure and heat flux is assessed using chemiluminescence and surface measurements respectively. Heat flux in the separated region shows no variation within a nondimensional span of 0.05 away from the centerline. Over the respective test times of 250 µs in HET and 1 ms in T5, the normalized heat flux data obtained in the two facilities over the same model are in very good agreement. The invisicid establishment period for the double-cone is in agreement between the two facilities.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.2514/6.2016-1979DOIArticle
Additional Information:© 2016 American Institute of Aeronautics and Astronautics. Published Online: 2 Jan 2016.
Group:GALCIT
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AIAA Paper2016-1979
Record Number:CaltechAUTHORS:20190828-081824663
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190828-081824663
Official Citation:Geometry and Test-Time Effects on Hypervelocity Shock-Boundary Layer Interaction. Andrew M. Knisely and Joanna M. Austin. 54th AIAA Aerospace Sciences Meeting. January 2016. https://doi.org/10.2514/6.2016-1979
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98282
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:28 Aug 2019 16:12
Last Modified:03 Oct 2019 21:39

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