fountain effect


Also found in: Dictionary.
Related to fountain effect: superfluid, Liquid helium

fountain effect

[′fau̇nt·ən i‚fekt]
(fluid mechanics)
The effect occurring when two containers of superfluid helium are connected by a capillary tube and one of them is heated, so that helium flows through the tube in the direction of higher temperature.
References in periodicals archive ?
From Figure 4 it can be noticed that, for April 18, 19, 21, and 22, 2018, at 10:00 UT, the EIA shape has a well-defined double-crest with a trough form [6], which is expected during daytime because of the equatorial fountain effect. During the day of the storm at 10:00 UT, Figure 4 also shows that the EIA is enhanced by showing a considerably increase of the VTEC in the northern hemisphere of ~133% and at the same time a poleward displacement of the crests, this being product of the super-fountain effect (e.g., [8-12, 29]).
The fountain effect causes a major rearrangement of the fluid and heat transfer rates are greatly altered because the fluid from the central core spills out and contacts the wall.
Because of the significant implications for microstructure development in the product, the fountain effect at the advancing free surface is explicitly taken into consideration in the simulation.
Without a fountain effect, they could not however match their numerical prediction of birefringence to the experimental double V-shaped pattern.
This comparison may provide some evidence for the suggestion of the present method: the V-shaped distribution of the principal stress difference near the melt front is formed by a fountain effect (circulating flow) and a viscoelastic effect (retardation time).
Suitable for ponds more than 15cm deep, it creates spray up to 60cm high and measures 31cm diameter, with a selection of three snap-on nozzles for different fountain effects. 150 litres per hour pumping capacity in peak conditions.
A silken-robed water diva creates fountain effects for the Catalyst washer.