707 Surface Velocity Measurement of Marangoni Convection using Photochromic Method
Details
A photochromic method has been developed and used for the measurement of surface velocity of Marangoni convection in a rectangular open boat. The working fluid is 5cSt silicone oil containing TMINBPS at 300ppm by weight. When exited by the converging laser beam 337.1nm in wavelength, the photochromic dye changes its color to generate a dark violet spot which moves with local surface velocity. The surface velocity profile measured with this method agrees well with those measured with a particle tracking method.
