Hypersonic vehicles re-entering Earth's atmosphere with orbital velocities generate gas flows with significant thermo-chemical non-equilibrium. Detailed kinetics of chemical reactions at such conditions is still not well understood but it may affect vehicle's thermal loads, aerodynamic moments and thermal radiation. This work assesses the Total Collision Energy (TCE) and the Kuznetsov-based state specific (KSS) chemical reaction models at pressures between 1 and 50 torr and velocities between 4 and 10 km/s in order to identify best test conditions for validating the models. Hypersonic flows at such conditions can be studied at the hypervelocity impact range facilities.


Copyright (2012) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in (M. Kulakhmetov*, Y. A. Bondar, M. S. Ivanov, and A. A. Alexeenko, “Assessment of high-enthalpy air chemistry models for hypervelocity ground-based experiments”, Proceedings of 28th International Symposium on Rarefied Gas Dynamics, 9–13 July 2012, Zaragoza, Spain. AIP Conf. Proc. Vol. 1501, pp. 1122-1128.) and may be found at http://dx.doi.org/10.1063/1.4769667. The following article has been submitted to/accepted by [American Institute of Physics]. After it is published, it will be found at (http://dx.doi.org/10.1063/1.4769667). Copyright (2012) M. Kulakhmetov*, Y. A. Bondar, M. S. Ivanov, and A. A. Alexeenko. This article is distributed under a Creative Commons Attribution 3.0 Unported License.

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