310 内部発熱対流における温度場の可視化と解析(S42-1 流れの可視化実験解析(1),S42 流れの可視化実験解析)  [in Japanese] 310 Visualization and Analysis of Temperature Field on Internally Heated Convection  [in Japanese]

Natural convection in a shallow fluid layer induced by internal heat generation was investigated experimentally. A horizontal temperature field at each Rayleigh number was visualized by Thermo-chromic Liquid Crystal (TLC), and then the obtained images were converted to the temperature field by a calibration curve, which correlates between color information extracted from the image and temperature. Individual cells were extracted from the converted temperature field and a variation of area of the cells with respect to the Rayleigh number represented a cell dilatation. Variations of statistical values, standard deviation of the temperature field and mean size of a cell, with Rayleigh number increases showed that there might be a gradual transition of the convection.