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Heat Flux Calibration of T5 Hypervelocity Shock Tunnel Conical Nozzle in Air

Marineau, Eric and Hornung, Hans (2012) Heat Flux Calibration of T5 Hypervelocity Shock Tunnel Conical Nozzle in Air. In: 47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition. American Institute of Aeronautics and Astronautics , Reston, VA, Art. No. 2009-1158. ISBN 978-1-60086-973-0. https://resolver.caltech.edu/CaltechAUTHORS:20191223-140317843

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Abstract

The uniformity of the convective heating due to a free stream of hypervelocity air expanded through a conical nozzle is evaluated in the T5 free-piston reflected shock tunnel at Caltech. The stagnation-point heat flux is measured on a rake of ten one-inch-diameter spheres located at the nozzle exit plane. A total of eight shots (two shots at each of the four conditions) were performed with stagnation enthalpies varying from 9.5 to 21 MJ/kg and stagnation pressures from 20 to 60 MPa. Good uniformity was found as the standard deviation among gages ranged between ±4% and ±7% when the two gages located near the nozzle wall were excluded. Good heat flux shot-to-shot repeatability was also found as the standard deviation in stagnation-point beat flux between shots at a given condition was generally below ±4%. The nozzle expansion and flow over a single sphere were simulated using DPLR CFD code with a fully catalytic wall. Very good agreement was found between DPLR and the experiment as the differences between computation and experiment are under 8% for each condition which is significantly below the experimental uncertainties.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.2514/6.2009-1158DOIArticle
ORCID:
AuthorORCID
Hornung, Hans0000-0002-4903-8419
Additional Information:© 2009 by the American Institute of Aeronautics and Astronautics, Inc.
Group:GALCIT
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Other Numbering System NameOther Numbering System ID
AIAA Paper2009-1158
Record Number:CaltechAUTHORS:20191223-140317843
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20191223-140317843
Official Citation:Heat Flux Calibration of T5 Hypervelocity Shock Tunnel Conical Nozzle in Air Eric Marineau and Hans Hornung. 47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition. January 2009. https://doi.org/10.2514/6.2009-1158
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:100417
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:23 Dec 2019 22:28
Last Modified:23 Dec 2019 22:28

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