The dynamics of the interfacial surface of helium II - vapor in a U-shaped channel
Yu.Yu. Puzina, A.P. Kryukov
Moscow Power Engineering Institute, Moscow, Russia
Keywords: experiment, superfluid helium, interfacial surface oscillations, channel, dynamics equation
Abstract
The paper considers experimental data on the dynamics of superfluid helium in a U-shaped cylindrical channel. An experimental cell and a methodology for investigations, parameter measuring and obtained data processing are described. When a heat flux is applied near the heater, vapor can appear, and the interfacial surface executes regular oscillations of macroscopic amplitude with a constant frequency. The dependences of the interfacial surface position and the corresponding parameters on time are given. The obtained experimental results are interpreted based on the earlier obtained analytical solution.
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