抄録
A modified two-fluid model is adopted to study flow and heat transfer of superfluid helium in a microchannel with a diameter as small as that of a superleak in a fountain effect pump. Variable properties of superfluid helium and energy dissipations due to the two-fluid mutual friction and the friction at the channel wall are fully taken into consideration. It is found that the normal fluid component flow is not trivial even in a channel with diameter of a micrometre, and that there exists an optimum diameter for the maximum mass flow rate. The flow of superfluid helium through a channel with different temperatures at the ends differs considerably from that of a Newtonian fluid. The strong dependence of the thermodynamic properties on temperature and pressure, as well as the internal-convection mechanism are found to be the causes of the unique flows.
本文言語 | 英語 |
---|---|
ページ(範囲) | 829-835 |
ページ数 | 7 |
ジャーナル | Cryogenics |
巻 | 37 |
号 | 12 |
DOI | |
出版ステータス | 出版済み - 1月 1 1997 |
!!!All Science Journal Classification (ASJC) codes
- 材料科学(全般)
- 物理学および天文学(全般)