Study of liquid column oscillation and vapour bubble oscillation resulting from film boiling in He II
Study of liquid column oscillation and vapour bubble oscillation resulting from film boiling in He II
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He II 中薄膜沸腾引起的液柱振荡和汽泡振荡研究
DOI：
10.1088/0022-3727/34/22/314
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
Ruzhu Wang
中科院分区：
文献类型：
--
作者：
P. Zhang;M. Murakami;Ruzhu Wang
本文研究了氦气在不同膜沸腾模式下的压力振荡。在过冷膜沸腾状态下，在平面加热器上可以看到一个火焰形状的汽泡在颤动，伴随着少量的可听得见的噪音，并在低温恒温器中检测到了由块状He II的汽泡振荡和液柱振荡引起的压力振荡。在有噪声的膜沸腾状态下，在饱和He II中，一个大的汽泡在平板式加热器上反复膨胀和破碎，并伴随着巨大的声学噪声，压力振荡主要是由汽泡的破碎和形成引起的。发生过渡沸腾的可能性有两种。对压力振荡进行了理论分析，与实验结果吻合较好。
The pressure oscillations during different film boiling modes in He II are studied in this paper. In the sub-cooled film boiling state, a flame-shaped vapour bubble can be seen to be quivering on the planar heater accompanied by a little audible noise, and the pressure oscillation, resulting from both vapour bubble oscillation and liquid column oscillation of bulk He II in a cryostat, is detected. In the noisy film boiling state in saturated He II, a big vapour bubble expands and crushes repeatedly on the planar heater accompanied by a loud acoustic noise, and the pressure oscillation is mainly caused by the crushing and formation of the vapour bubble. There are two possibilities for the occurrence of transition boiling. A theoretical analysis of the pressure oscillation was also carried out, which agreed well with the experimental results.