论文部分内容阅读
在超流氢的沸腾实验中,随着静压液柱高度h的降低,会出现不同的沸腾状态。在噪声沸腾中,一个与平板加热器大小相当的气泡在其表面上反复地长大、缩小,并伴随着巨大的噪声和剧烈的机械振动;在无噪声沸腾中,在平板加热器表面形成一个极稳定的气膜,并且,没有噪声和机械振动出现;而在两者之间,存在一个过渡的沸腾状态。通过沸腾过程中的压力振动测量和可视化测量,对不同沸腾状态进行了研究。
In the super-hydrogen boiling experiment, with the hydrostatic liquid column height h decreased, there will be different boiling state. In the noise boiling, a bubble of a size equal to that of a flat plate heater repeatedly grows and shrinks on its surface accompanied by tremendous noise and severe mechanical vibrations; in the noiseless boiling, a bubble is formed on the surface of the panel heater Very stable gas film, and, no noise and mechanical vibration appear; and in between, there is a transitional boiling state. Different boiling states were investigated by pressure vibration measurements and visual measurements during the boiling process.