A thermo-chemical exploration of a two-dimensional reacting supersonic mixing layer

The hypervelocity two-dimensional reacting supersonic mixing layer experiments of Erdos et al. with a H2/air stream have been simulated with model free fine grid calculations on a N–S solver with full and single step chemistry. Response of the flow to fluctuations in the in-flow stream is utilized to examine chemistry fluid flow interactions. A favourable comparison of the computation with experimentally measured wall static pressure and heat transfer data along with flow picture forms the basis for further analysis. Insight into the mean flow thermal and reaction properties is provided from the examination of large scale structures in the flow in which the hydrogen stream is at 103 K flowing at 2.4 km/s (M=3.09) and the air stream is at 2400 K flowing at 3.8 km/s (M=3.99). The chemistry-flow interaction is dominated by large stream kinetic energy and affects the mean properties including the temperature profiles across the mixing layer. Single step chemistry, in comparison to full chemistry, is inadequat...

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