Thermal Oscillation Anomalous Heat Transport Characteristics in Saturated- He II Channels

Abstract

The thermal oscillation in the near-saturated He II transports the work through channels above the critical heat flux q_c of the phase transition. The oscillation does not entirely destroy the temperature distribution in the vortex state built at q_c. Therefore the additional heat input above q_c may be efficiently converted into the work flow superimposed on heat conduction, The characteristic frequencies of the thermal oscillation are discriminated by means of an oscillatory disk and a microphone. The thermal oscillation is dominated by the channel length reflecting the nature of the wave.