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设计并搭建了连铸二冷气雾射流热态传热实验装置,实现了连铸二冷试样冷却过程的实验室模拟。通过布置在试样内部的热电偶测得的温度值,利用一维非稳态导热反问题计算方法反算表面温度和表面热流密度。结果表明:试样冷却过程表面热流密度基于水的沸腾机理,随喷射表面温度呈阶梯变化,其表面温度为656℃时,表面热流密度到达最大值2.25×106W/m2。
Design and set up a continuous heat transfer experimental apparatus for the second continuous cooling mist gas jet to realize the laboratory simulation of the cooling process of the second continuous cooling specimen. The surface temperature and surface heat flux were calculated by the one-dimensional non-steady-state inverse thermal problem using the temperature measured by the thermocouple arranged inside the sample. The results show that the surface heat flux density is up to 2.25 × 106 W / m2 when the surface temperature is 656 ℃ with the jet boiling temperature changing with the jet boiling temperature.