Thermal Counterflow Experiment

A systematic study of the normal fluid motion and quantized vortex line density in steady-state and decaying thermal counterflow in He II.

Superfluid helium-4 (He II) has been widely used as a coolant in many engineering applications. Investigating the heat induced flow in He II can help engineers design a better cooling system. A novel flow visualization technique based on laser induced fluorescence of thin lines of the metastable He2 triplet molecules has been developed in our lab. Combining flow visualization and second sound attenuation measurements allow us to study the heat induced flow and its decay in He II.

Staff Contact

Wei Guo.

Last modified on 28 September 2016