Steady baroclinic waves in differentially heated rotating annulus fluid have been known experimentally from measurements of fluid velocities and temperatures to have the convection structure in which two jet-streams meander between high-and low-pressure vortices. To see obviously this structure, a method of visualization is developed by means of a multiple liquid crystal technique so as to allow observing real-time movements of convections in two horizontal sections of the fluid simultaneously. Introducing the observations of internal vertical sections as well, the main structure of the waves could be easily grasped from recorded video-pictures of the flow. An usefulness of the methods is demonstrated with a few photographs showing some internal horizontal and vertical structures of the fluid.
In order to clarify the behavior of partial slip at contact surface, we carefully try to visualize the partial slip with the correlation method. To begin with, we confirmed the accuracy of visualization within ± 0.5 pixel under non-load situation, referring to the measured data with a micrometer. Secondly, it was discussed that the size of the matrix and the investigated region for the calculation of the correlation is essential for the correct estimation. Finally, we showed the spatial distribution of partial slip at contact surface, and the relation between area of stick region and tangential coefficient.