Real gas CFD simulations of hydrogen/oxygen supercritical combustion

¹ Institute for Thermodynamics, Universität der Bundeswehr München Werner-Heisenberg-Weg 39, Neubiberg 85577, Germany
² Institute for Thermo- and Fluiddynamics, Ruhr-Universität Bochum Universitätsstrasse 150, Bochum 44780, Germany

Abstract

A comprehensive numerical framework has been established to simulate reacting flows under conditions typically encountered in rocket combustion chambers. The model implemented into the commercial CFD Code ANSYS CFX includes appropriate real gas relations based on the volume-corrected Peng-Robinson (PR) equation of state (EOS) for the flow field and a real gas extension of the laminar flamelet combustion model. The results indicate that the real gas relations have a considerably larger impact on the flow field than on the detailed flame structure. Generally, a realistic flame shape could be achieved for the real gas approach compared to experimental data from the Mascotte test rig V03 operated at ONERA when the differential diffusion processes were only considered within the flame zone.