MARANGONI FLOW VELOCITY IN A THIN DISK OF MOLTEN NaNO 2

Abstract
Temperature gradient driven Marangoni flow has been investigated experimentally in circular disks of molten NaNO3. 1.5 mm high by 7 mm diameter. Flow velocities were evaluated from motion picture film and temperatures were determined with a miniature thermocouple. The results are compared to an order of magnitude analysis and agreement is reasonably good.