Observation of an ablating surface in expansion tunnel flow

D'Souza, Mary G., Eichmann, Troy N., Potter, Daniel F., Morgan, Richard G., McIntyre, Timothy J., Jacobs, Peter A. and Mudford, Neil R. (2010) Observation of an ablating surface in expansion tunnel flow. AIAA Journal, 48 7: 1557-1560. doi:10.2514/1.J050207

Author D'Souza, Mary G.
Eichmann, Troy N.
Potter, Daniel F.
Morgan, Richard G.
McIntyre, Timothy J.
Jacobs, Peter A.
Mudford, Neil R.
Title Observation of an ablating surface in expansion tunnel flow
Journal name AIAA Journal   Check publisher's open access policy
ISSN 0001-1452
Publication date 2010-07
Sub-type Article (original research)
DOI 10.2514/1.J050207
Volume 48
Issue 7
Start page 1557
End page 1560
Total pages 4
Place of publication Reston, VA., United States
Publisher American Institute of Aeronautics and Astronautics
Collection year 2011
Language eng
Abstract The observation of an ablating surface in expansion tunnel flow was reported. A one-dimensional (1-D) semi-infinite analysis was performed using an empirical estimation of the stagnation-point heat flux. A surface temperature change for epoxy of 178 K in 50 μs was calculated, which is sufficient for the epoxy coating to commence ablation during the steady test period. The 10% temperature penetration depth is 6 μm in 50 μs. The luminosity from substantial portions of the model and shock-layer flow was visualized using a Shimadzu HPV1 high-speed charge-coupled device (CCD) video camera recording at 500 kfps with a 1 μs exposure time. The uniform image response over the axisymmetric model implies the shock-layer gas irradiance is high immediately behind the shock and decreases rapidly as the model surface is approached. The measurements showed that use of an epoxy coating results in greatly increased CN and C2 radiation, much greater than when no coating is employed.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Received 10 September 2009; revision received 15 February 2010; accepted for publication 14 March 2010.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2011 Collection
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Citation counts: TR Web of Science Citation Count  Cited 4 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 8 times in Scopus Article | Citations
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Created: Sun, 18 Jul 2010, 00:10:31 EST