Simultaneous PLIF/PIV measurements for a single-mode inclined interface

The Shock Tube and Advanced Mixing Laboratory (STAML) at Georgia Institute of Technology is using a newly established inclined shock tube facility to study an inclined interface perturbation. This facility allows for simultaneous characterization of density and velocity fields by employing high-resolution, full-field Planar Laser-Induced Fluorescence (PLIF) and Particle Image Velocimetry (PIV), respectively. The incident shock strength of Mach 1.55 was used to impulsively accelerate a N$_{\mathrm{2}}$-Acetone mixture over CO$_{\mathrm{2}}$ inclined interface with an Atwood number of 0.23 and an 80$^{\mathrm{o}}$ angle of inclination. This angle of inclination results in a linear perturbation as defined by the amplitude-to-wavelength ratio ($\eta $/$\lambda =$0.097). The development of the turbulent mixing layer for both pre- and post-reshock is determined by measuring several quantities, including two BHR model parameters: density self-correlation and turbulent mass flux.