Reflective synthetic schlieren technique for measuring liquid surface deformations

’Moon-Glade’ Background Oriented Schlieren method for measuring liquid surface deformations was used. The is based on the analysis of background dots pattern images reflected from surface. a transparent polyester film with dots, which located at certain distance above liquid. Compared to other methods that use image, this technique has following advantages: (1) it allows restoring instantaneous topography free sensitivity less than 1 µm; (2) non-intrusive and only requires camera background; (3) also suitable non-isothermal layer does not require addition dye. studies caused by buoyancy effect are carried out. It shown measurement limited radius curvature surface, but range measured values can be increased reducing