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Published May 2017 | Published
Journal Article Open

Rate-Controlled Constrained Equilibrium for Nozzle and Shock Flows

Abstract

The performance of different constraints for the rate-controlled constrained-equilibrium (RCCE) method is investigated in the context of modeling reacting flows characteristic of hypervelocity ground testing facilities and reentry conditions. Although the RCCE approach has been used widely in the past, its application in non-combustion-based reacting flows is rarely done; the flows being investigated in this work do not contain species that can easily be classified as reactants and/or products. The effectiveness of different constraints is investigated before running a full computational simulation, and new constraints not reported in the existing literature are introduced. A constraint based on the enthalpy of formation is shown to work well for the two gas models used for flows that involve both shocks and steady expansions.

Additional Information

© 2016 by Jason Rabinovitch. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. Received 25 February 2016; revision received 21 August 2016; accepted for publication 22 August 2016; published online 14 November 2016. Funding for this work was provided by the U.S. Air Force Office of Scientific Research, Grant FA9550-12-1-0472.

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Created:
August 19, 2023
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