Abstract
In the present study, some experimental results on noisy film boiling in He II are presented. Based on the study of the pressure oscillation of noisy film boiling under various thermal conditions, e.g. different bath temperature, immersion depth, heat flux, geometrical configuration and size of the heater, it is found that the bath temperature has a vital effect on the boiling state when it is close to the λ temperature. The critical immersion depth dividing different boiling states varies as bath temperature changes. The dominant frequency of noisy film boiling state shows little dependence on heat flux, while the geometrical configuration and size of the heater affects it drastically. Simultaneous measurement results from pressure sensor and superconductor temperature sensor show that a strong correlation exists between the pressure oscillation and the temperature oscillation during noisy film boiling.
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