1998 Volume 18 Issue Supplement1 Pages 79-80
Flow patterns of a surface tension driven convection (Marangoni convection) in a liquid bridge were measured using three-dimensional particle tracking velocimetry (3-D PTV) in a microgravity experiment conducted on the TR-IA#6 sounding rocket. The dimension of the liquid bridge was 28 mm in disk diameter and 20 mm in length, and the temperature difference of 50 K was imposed between the heated and the cooled disks, thus achieving a super critical condition. The flow patterns were observed through the transparent heated disk with three CCD cameras simultaneously, and their images were analyzed to perform particle tracking. Three-dimensional particle trajectories so obtained exhibited unsteady and complicated flow patterns showing vortex-like circulation zones in the corner regions near the disks.
