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In this work, a qualitative and quantitative characterization of the three-dimensional flow in a lid-driven cylindrical cavity with different optical techniques is presented. Mach–Zehnder interferometry and photographic techniques have been used for a qualitative description of some flow features. However, the real challenge is to obtain quantitative measurements, as the cavity dimensions and geometry...
In this work, measurements of the velocity field inside a vertically shaken drop are presented. The drop-wetting condition is slightly hydrophobic. The drop is sandwiched between two horizontal glass plates in order to allow a good visualization. Digital in-line holography is utilized to access the three-dimensional flow inside the drop. When shaken, the drop experiences several transitions of its...