Superfluid Helium Flow Through an Orifice Near Critical Velocity

1967 ◽  
Vol 19 (15) ◽  
pp. 822-824 ◽  
Author(s):  
W. J. Trela ◽  
W. M. Fairbank
Keyword(s):  
Critical Velocity ◽  
Superfluid Helium ◽  
Helium Flow ◽  
Flow Through

Critical velocities for superfluid-helium flow through a small hole

1974 ◽  
Vol 9 (2) ◽  
pp. 885-892 ◽  
Author(s):  
J. P. Hulin ◽  
D. D'Humieres ◽  
B. Perrin ◽  
A. Libchaber
Keyword(s):  
Superfluid Helium ◽  
Small Hole ◽  
Helium Flow ◽  
Flow Through ◽  
Critical Velocities

Superfluid helium flow through porous media

Cryogenics ◽  
1996 ◽  
Vol 36 (9) ◽  
pp. 667-673 ◽  
Author(s):  
H. Nakai ◽  
N. Kimura ◽  
M. Murakami ◽  
T. Haruyama ◽  
A. Yamamoto
Keyword(s):  
Porous Media ◽  
Superfluid Helium ◽  
Flow Through Porous Media ◽  
Helium Flow ◽  
Flow Through

Transition to Turbulent State of Superfluid Helium Flow through Thermomechanical Pump Element

1996 ◽  
pp. 273-280 ◽  
Author(s):  
Hirotaka Nakai ◽  
Nobuhiro Kimura ◽  
Masahide Murakami ◽  
Tomiyoshi Haruyama ◽  
Akira Yamamoto
Keyword(s):  
Superfluid Helium ◽  
Helium Flow ◽  
Flow Through

scholarly journals Superfluid Helium Flow through Porous Media.

1996 ◽  
Vol 31 (9) ◽  
pp. 474-480
Author(s):  
Hirotaka NAKAI ◽  
Nobuhiro KIMURA ◽  
Masahide MURAKAMI ◽  
Tomiyoshi HARUYAMA ◽  
Akira YAMAMOTO
Keyword(s):  
Porous Media ◽  
Superfluid Helium ◽  
Flow Through Porous Media ◽  
Helium Flow ◽  
Flow Through

scholarly journals Critical Velocity of Superfluid Helium Films

1976 ◽  
Vol 56 (3) ◽  
pp. 996-997
Author(s):  
Y. Ichikawa ◽  
T. Usui
Keyword(s):  
Critical Velocity ◽  
Superfluid Helium ◽  
Helium Films

Effect of Surface Roughness on Gaseous Flow Through Microchannels

2000 ◽  
Author(s):  
Stephen E. Turner ◽  
Hongwei Sun ◽  
Mohammad Faghri ◽  
Otto J. Gregory
Keyword(s):  
Surface Roughness ◽  
Reynolds Number ◽  
Friction Factor ◽  
Reynolds Numbers ◽  
Helium Flow ◽  
Local Pressure ◽  
Aspect Ratios ◽  
Corrugated Surfaces ◽  
Flow Through ◽  
Effect Of Surface

Abstract This paper presents an experimental investigation on nitrogen and helium flow through microchannels etched in silicon with hydraulic diameters between 10 and 40 microns, and Reynolds numbers ranging from 0.3 to 600. The objectives of this research are (1) to fabricate microchannels with uniform surface roughness and local pressure measurement; (2) to determine the friction factor within the locally fully developed region of the microchannel; and (3) to evaluate the effect of surface roughness on momentum transfer by comparison with smooth microchannels. The friction factor results are presented as the product of friction factor and Reynolds number plotted against Reynolds number. The following conclusions have been reached in the present investigation: (1) microchannels with uniform corrugated surfaces can be fabricated using standard photolithographic processes; and (2) surface features with low aspect ratios of height to width have little effect on the friction factor for laminar flow in microchannels.

Upscaling of superfluid helium flow in porous media

2010 ◽  
Vol 53 (21-22) ◽  
pp. 4852-4864 ◽  
Author(s):  
H. Allain ◽  
M. Quintard ◽  
M. Prat ◽  
B. Baudouy
Keyword(s):  
Porous Media ◽  
Superfluid Helium ◽  
Flow In Porous Media ◽  
Helium Flow
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