  The present study employs the Direct Simulation Monte Carlo (DSMC) method, a
widely used numerical method for studying non-continuum flows, to investigate
the flow characteristics of a chemically reacting hypersonic flow over a
backward-facing step. This work explores the effects of the Knudsen number on
the behaviour of rarefied flow and compares the results with the non-reacting
flow. The primary objective of the present thesis is to elucidate the variation
of temperature in the flow domain with Knudsen number. The results of the study
show that chemical reactions affect the temperature distribution in the flow
domain significantly.
