Effective mixing in a short mixing chamber is a
major challenge in supersonic air breathing engines, especially
the mixing between two high speed co-axial streams. The
residence time is a major factor to get the two streams properly
mixed. The selection of mixing method is crucial in the supersonic
conditions. An experimental study has been performed on the
supersonic mixing of air from strut injectors of various
combinations in their trailing ramp angles with a free stream air
of Mach number 2. Two different configurations of geometries, a
plain geometry and a lobed geometry considered and further two
different combinations, slot and hole injections, are taken for the
study in each geometry. Among different combinations, it is found
that a better mixing enhancement is achieved for the 9o lobed
geometry struts.
Effect of Strut Geometry in Supersonic Mixing
