INVESTIGATION OF MIXED CONVECTION CAUSED BY CENTRIFUGAL ACCELERATION

In this paper, the influence of a macro-flow, which is some kind of na tural convection caused by heat-in leak in rotational cryostats, has b een investigated. A cooling channel unit which has a main flow counter to the buoyancy direction has been made to simulate the macro-flow in fluence. A high-speed camera have been used to observe the transient l ocal convection. Also a thin film thermometer has been used to detect the transient temperature variation. As the result, some fluctuation c aused by the macro-now has been observed in the transient convection. The degradation of the transient temperature variation and steady heat transfer have been measured.