Superfluid helium-4 (helium II or He-II) is the superfluid form of helium-4, an isotope of the element helium. A superfluid is a state of matter in which matter behaves like a fluid with zero …

2023年4月25日 · We devise a new approach based on Hamiltonian mechanics suitable for simulating thermally driven and weakly compressible flows with free surfaces. The method is …

2012年9月17日 · We consider a simple experimental setup, based on a harmonic confinement, where a Bose-Einstein condensate and a thermal cloud of weakly interacting alkali-metal …

superfluid shows several spectacular effects. For example, superfluid helium cannot be kept in an open vessel because then the fluid creeps as a thin film up the vessel wall and over the rim. …

2010年4月14日 · In the fountain effect, a chamber is constructed which is connected to a reservoir of helium II by a sintered disc through which superfluid helium leaks easily but through which …

2017年8月17日 · We have made a quantitative measurement of one of the striking manifestations of the superfluid phase, the so called fountain effect, which can be observed in helium below …

Superfluidity is traditionally characterized as a fluid with zero viscosity. Indeed, when stirred, superfluids will continue to flow indefinitely. The viscosity of a fluid is defined as its resistance …

Looking for the Superfluid Fountain Effect in a Bose-Einstein Condensate Callam Manning Under the supervision of Dr Tyler Neely A thesis submitted to the University of Queensland in partial …

2010年12月10日 · By analyzing the dynamics of the system, we are able to identify the superfluid and normal components of the flow as well as to distinguish the condensate fraction from the …

We show that this thermo-mechanical effect might indeed be observed in this system. By analyzing the dynamics of the system, we are able to identify the superfluid and normal …