How High Can a Helium Fountain at the Lambda Point Reach?

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SUMMARY

The maximum height a helium fountain can reach at the lambda point is influenced by the unique properties of superfluid helium, particularly its zero viscosity and the attractive forces it exerts on solid surfaces. The calculations involve understanding the relationship between the diameter of the tube, surface area, and the height of the fountain. These factors collectively determine the fountain's behavior and height, which has not been adequately addressed in the forum for nearly two years.

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  • Understanding of superfluid helium properties
  • Knowledge of fluid dynamics principles
  • Familiarity with the concept of the lambda point in helium
  • Basic grasp of surface tension and capillary action
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  • Study the effects of surface tension on fluid behavior in narrow tubes
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Physicists, engineers, and researchers interested in fluid dynamics, particularly those studying superfluidity and its applications in experimental physics.

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How would I go about calculating how high a fountain of Helium at the [lamb] point would shoot?

Is the height a function of diamater/surface area, and height of the tube?
 
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Do i have to figure this out myself?

Okay, I know it has something to do with the zero viscosity of a super fluid... and it must have an attractive forcre to solids which enables it to flow up the tube, because its not grabbing the air...[zz)]
 
Is everyone is afraid to attempt to answer this?
 
somebody?? anybody? c'mon, its been almost 2 years!
 

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