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Thermodynamic properties of carbon–phenolic gas mixtures

Scoggins, James B. and Rabinovitch, Jason and Barros-Fernandez, Benjamin and Martin, Alexandre and Lachaud, Jean and Jaffe, Richard L. and Mansour, Nagi N. and Blanquart, Guillaume and Magin, Thierry E. (2017) Thermodynamic properties of carbon–phenolic gas mixtures. Aerospace Science and Technology, 66 . pp. 177-192. ISSN 1270-9638. https://resolver.caltech.edu/CaltechAUTHORS:20170628-154137549

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Abstract

Accurate thermodynamic properties for species found in carbon–phenolic gas mixtures are essential in predicting material response and heating of carbon–phenolic heat shields of planetary entry vehicles. A review of available thermodynamic data for species found in mixtures of carbon–phenolic pyrolysis and ablation gases and atmospheres rich with C, H, O, and N such as those of Earth, Mars, Titan, and Venus, is performed. Over 1200 unique chemical species are identified from four widely used thermodynamic databases and a systematic procedure is described for combining these data into a comprehensive model. The detailed dataset is then compared with the Chemical Equilibrium with Applications thermodynamic database developed by NASA in order to quantify the differences in equilibrium thermodynamic properties obtained with the two databases. In addition, a consistent reduction methodology using the mixture thermodynamic properties as an objective function is developed to generate reduced species sets for a variety of temperature, pressure, and elemental composition spaces. It is found that 32 and 23 species are required to model carbon–phenolic pyrolysis gases mixed with air and CO_2, respectively, to maintain a maximum error in thermodynamic quantities below 10%.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.ast.2017.02.025DOIArticle
ORCID:
AuthorORCID
Rabinovitch, Jason0000-0002-1914-7964
Blanquart, Guillaume0000-0002-5074-9728
Additional Information:© 2017 Elsevier Masson SAS. Received 5 October 2016, Revised 15 February 2017, Accepted 17 February 2017, Available online 10 March 2017.
Group:GALCIT
Subject Keywords:Thermodynamics; Ablation; Pyrolysis; Carbon–phenolic; Thermal protection materials; Re-entry vehicles
Record Number:CaltechAUTHORS:20170628-154137549
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170628-154137549
Official Citation:James B. Scoggins, Jason Rabinovitch, Benjamin Barros-Fernandez, Alexandre Martin, Jean Lachaud, Richard L. Jaffe, Nagi N. Mansour, Guillaume Blanquart, Thierry E. Magin, Thermodynamic properties of carbon–phenolic gas mixtures, Aerospace Science and Technology, Volume 66, July 2017, Pages 177-192, ISSN 1270-9638, https://doi.org/10.1016/j.ast.2017.02.025. (http://www.sciencedirect.com/science/article/pii/S1270963816307945)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:78676
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:28 Jun 2017 22:47
Last Modified:10 Mar 2020 17:32

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