Experimental study on the influence of the deepth of liquid layer to free surface in buoyant-thermcapillary convection
液层厚度对浮力-热毛细对流面型的影响

An optical diagnostic system consisting of Michelson interferometer with image processor has been developed for study of the kinetics of Buoyant-Thermcapillary Convection. The convection, surface deformation and surface wave in a rectangular cavity with different temperature's sidewalls have been investigated. Fourier transformation is used to grating analysis. The quantitative results of surface deformation and surface wave have been calculated from the interference fringe patterns. The present experiment demonstrates that surface deformation and surface wave are related with temperature gradient, surface tension and buoyancy, surface wave is wrapped in surface deformation.