Characterization of flow in sub-scale cable-in-conduit conductors

M. A. Daugherty; R. Maekawa; S. W.Van Sciver

doi:10.1109/77.233752

Characterization of flow in sub-scale cable-in-conduit conductors

M. A. Daugherty, R. Maekawa, S. W.Van Sciver

Research output: Contribution to journal › Letter › peer-review

1 Scopus citations

Abstract

We have measured the pressure drop of supercritical helium and He II counterflow heat transport insub scale cable-in-conduit conductors at a variety of different temperatures. These measurements were made on various conductors with different flow areas, void fractions and strand diameters. Classical friction factor analysis was used to correlate the pressure drop results. The results of this analysis revealed systematic variations in the friction factor which appear to be dependent on the temperature of the helium. In a separate experiment heat transport in He II contained in the CICCs was analyzed in terms of the Gorter- dTMellink relationship,[formula omitted], to obtain an independent determination of the flow cross sectional area. We used these new cross sectional areas to reanalyze previously reported pressure drop data on the same conductors. Use of Hell counterflow measurements as a general method to characterize the hydraulics of these conductors is discussed.

Original language	English
Pages (from-to)	500-502
Number of pages	3
Journal	IEEE Transactions on Applied Superconductivity
Volume	3
Issue number	1
DOIs	https://doi.org/10.1109/77.233752
State	Published - Mar 1993
Externally published	Yes

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abstract = "We have measured the pressure drop of supercritical helium and He II counterflow heat transport insub scale cable-in-conduit conductors at a variety of different temperatures. These measurements were made on various conductors with different flow areas, void fractions and strand diameters. Classical friction factor analysis was used to correlate the pressure drop results. The results of this analysis revealed systematic variations in the friction factor which appear to be dependent on the temperature of the helium. In a separate experiment heat transport in He II contained in the CICCs was analyzed in terms of the Gorter- dTMellink relationship,[formula omitted], to obtain an independent determination of the flow cross sectional area. We used these new cross sectional areas to reanalyze previously reported pressure drop data on the same conductors. Use of Hell counterflow measurements as a general method to characterize the hydraulics of these conductors is discussed.",

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AU - Maekawa, R.

AU - Sciver, S. W.Van

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N2 - We have measured the pressure drop of supercritical helium and He II counterflow heat transport insub scale cable-in-conduit conductors at a variety of different temperatures. These measurements were made on various conductors with different flow areas, void fractions and strand diameters. Classical friction factor analysis was used to correlate the pressure drop results. The results of this analysis revealed systematic variations in the friction factor which appear to be dependent on the temperature of the helium. In a separate experiment heat transport in He II contained in the CICCs was analyzed in terms of the Gorter- dTMellink relationship,[formula omitted], to obtain an independent determination of the flow cross sectional area. We used these new cross sectional areas to reanalyze previously reported pressure drop data on the same conductors. Use of Hell counterflow measurements as a general method to characterize the hydraulics of these conductors is discussed.

AB - We have measured the pressure drop of supercritical helium and He II counterflow heat transport insub scale cable-in-conduit conductors at a variety of different temperatures. These measurements were made on various conductors with different flow areas, void fractions and strand diameters. Classical friction factor analysis was used to correlate the pressure drop results. The results of this analysis revealed systematic variations in the friction factor which appear to be dependent on the temperature of the helium. In a separate experiment heat transport in He II contained in the CICCs was analyzed in terms of the Gorter- dTMellink relationship,[formula omitted], to obtain an independent determination of the flow cross sectional area. We used these new cross sectional areas to reanalyze previously reported pressure drop data on the same conductors. Use of Hell counterflow measurements as a general method to characterize the hydraulics of these conductors is discussed.

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Characterization of flow in sub-scale cable-in-conduit conductors

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