Preliminary 2D Shock-tube experiments in combination with high speed Schlieren shadow photography. 

We developed a 2D shock-tube setup using 2 plexiglass sheets (30 cm x 50 cm x 1 cm) separated by 2 lateral bars (gap between plexiglass sheets 1.2 cm). We injected compressed air into the 2D setup at different overpressures (up to 8 bar). The high-pressure reservoir is connected with the 2D apparatus through a diaphragm pulse valve which allows a fast release of pressurized gas into the system. The 2D setup was either empty (i.e. with air at ambient conditions) or filled with a given amount of fluids (water or viscous fluid) or small particles. Images were collected at a frame rate of 50000 fps. The field of view of the images show the jet flow dynamics within the 2 plexiglass sheets (vent is outside the field of view). 

By using Schlieren shadow photography we can see the presence of some textures in the images, which are likely to be generated by the plexiglass sheets.