The aspect-ratio effect of He II channels on the heat transport characteristics

Conference · Tue Dec 31 00:00:00 EST 1996

OSTI ID:416650

Kobayashi, H; Akedo, Y; Kawakami, K ^[1]

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1. Nihon Univ., Tokyo (Japan)

The critical heat flux q{sub {lambda}} at which normal-fluid (He I) sets in at the center of a heated surface distributed along the inner wall of a He II channel can be smaller than the value calculated from the theory of Gorter-Mellink heat conduction. The reduction in q{sub {lambda}} becomes noticeable as the ratio of channel gap d to channel length L increases. The effect may be explained by the presence of a temperature gradient across the channel gap, so that the temperature at the heated side reaches the {lambda}-point at an earlier q{sub {lambda}} than the other side.

• OSTI ID: 416650
• Report Number(s): CONF-950722-; TRN: 97:001629
• Resource Relation: Conference: CEC/ICMC `95: cryogenic engineering conference and international cryogenic materials conference, Columbus, OH (United States), 17-21 Jul 1995; Other Information: PBD: 1996; Related Information: Is Part Of Advances in cryogenic engineering. Volume 41, Part A & B; Kittel, P. [ed.]; PB: 2037 p.
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
TUBES
ASPECT RATIO
HEAT TRANSFER
HELIUM II
CRITICAL HEAT FLUX