Basic Study on Two-Phase Flow Characteristics of Slush Nitrogen in a Pipe

J. Ishimoto; R. Ohno; H. Yanagi; A. Machida; M. Ikeuchi; K. Hattori; A. Ito

doi:10.1063/1.1774794

Basic Study on Two-Phase Flow Characteristics of Slush Nitrogen in a Pipe

J. Ishimoto, R. Ohno, H. Yanagi, A. Machida, M. Ikeuchi, K. Hattori, A. Ito

IFS - Global Collaborative Research and Education Center for Integrated Flow Science (IFS-GCORE)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

8 Citations (Scopus)

Abstract

The fundamental two-phase flow characteristics of slush nitrogen in a pipe are numerically and experimentally investigated to develop effective cooling performance for long distance superconducting cables. First, the governing equations of the two-phase slush nitrogen flow based on the unsteady thermal nonequilibrium two-fluid model are presented and several flow characteristics are numerically calculated taking into account the effects of slush volume fraction, particle diameter, and duct shape. Furthermore, in experimental study, minute slush is generated by the slush atomization nozzle and the unsteady pressure and temperature distributions of two-phase slush nitrogen flow along the longitudinal direction of pipe are measured. According to the numerical and experimental results, it is found that the reduction of the pressure loss by using slush is possible in the case of long distance pipe lengths. Also, optimized thermal flow conditions for cryogenic two-phase slush nitrogen with practical use of latent heat of slush melting are predicted for the development of new type superconducting cooling systems.

Original language	English
Title of host publication	Advances in Cryogenic Engineering
Subtitle of host publication	Transactions of the Cryogenic Engineering Conference - CEC
Editors	John Pfotenhauer, Steven Van Sciver, Albert Zeller, Jonathan Demko, Christopher Rey, John G. Weisend II, John Barclay, Michael DiPirro, Quan-Sheng Shu, Peter Kittel, Edward Daly, John R. Hull, Jennifer Lock, Joseph Waynert, Susan Breon, James Maddocks, John Zbasnik, Patrick J. Kelley, Arkadiy Klebaner
Publisher	American Institute of Physics Inc.
Pages	1099-1106
Number of pages	8
ISBN (Electronic)	0735401861
DOIs	https://doi.org/10.1063/1.1774794
Publication status	Published - 2004 Jun 23
Event	2003 Cryogenic Engineering Conference, CEC 2003 - Anchorage, United States Duration: 2003 Sept 22 → 2003 Sept 26

Publication series

Name	AIP Conference Proceedings
Volume	710
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	2003 Cryogenic Engineering Conference, CEC 2003
Country/Territory	United States
City	Anchorage
Period	03/9/22 → 03/9/26

Access to Document

10.1063/1.1774794

Cite this

Ishimoto, J., Ohno, R., Yanagi, H., Machida, A., Ikeuchi, M., Hattori, K., & Ito, A. (2004). Basic Study on Two-Phase Flow Characteristics of Slush Nitrogen in a Pipe. In J. Pfotenhauer, S. Van Sciver, A. Zeller, J. Demko, C. Rey, J. G. Weisend II, J. Barclay, M. DiPirro, Q-S. Shu, P. Kittel, E. Daly, J. R. Hull, J. Lock, J. Waynert, S. Breon, J. Maddocks, J. Zbasnik, P. J. Kelley, & A. Klebaner (Eds.), Advances in Cryogenic Engineering: Transactions of the Cryogenic Engineering Conference - CEC (pp. 1099-1106). (AIP Conference Proceedings; Vol. 710). American Institute of Physics Inc.. https://doi.org/10.1063/1.1774794

Ishimoto, J. ; Ohno, R. ; Yanagi, H. et al. / Basic Study on Two-Phase Flow Characteristics of Slush Nitrogen in a Pipe. Advances in Cryogenic Engineering: Transactions of the Cryogenic Engineering Conference - CEC. editor / John Pfotenhauer ; Steven Van Sciver ; Albert Zeller ; Jonathan Demko ; Christopher Rey ; John G. Weisend II ; John Barclay ; Michael DiPirro ; Quan-Sheng Shu ; Peter Kittel ; Edward Daly ; John R. Hull ; Jennifer Lock ; Joseph Waynert ; Susan Breon ; James Maddocks ; John Zbasnik ; Patrick J. Kelley ; Arkadiy Klebaner. American Institute of Physics Inc., 2004. pp. 1099-1106 (AIP Conference Proceedings).

@inproceedings{2084511cbe3e40faa8342a83f74745fb,

title = "Basic Study on Two-Phase Flow Characteristics of Slush Nitrogen in a Pipe",

abstract = "The fundamental two-phase flow characteristics of slush nitrogen in a pipe are numerically and experimentally investigated to develop effective cooling performance for long distance superconducting cables. First, the governing equations of the two-phase slush nitrogen flow based on the unsteady thermal nonequilibrium two-fluid model are presented and several flow characteristics are numerically calculated taking into account the effects of slush volume fraction, particle diameter, and duct shape. Furthermore, in experimental study, minute slush is generated by the slush atomization nozzle and the unsteady pressure and temperature distributions of two-phase slush nitrogen flow along the longitudinal direction of pipe are measured. According to the numerical and experimental results, it is found that the reduction of the pressure loss by using slush is possible in the case of long distance pipe lengths. Also, optimized thermal flow conditions for cryogenic two-phase slush nitrogen with practical use of latent heat of slush melting are predicted for the development of new type superconducting cooling systems.",

author = "J. Ishimoto and R. Ohno and H. Yanagi and A. Machida and M. Ikeuchi and K. Hattori and A. Ito",

note = "Publisher Copyright: {\textcopyright} 2004 American Institute of Physics.; 2003 Cryogenic Engineering Conference, CEC 2003 ; Conference date: 22-09-2003 Through 26-09-2003",

year = "2004",

month = jun,

day = "23",

doi = "10.1063/1.1774794",

language = "English",

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editor = "John Pfotenhauer and {Van Sciver}, Steven and Albert Zeller and Jonathan Demko and Christopher Rey and {Weisend II}, {John G.} and John Barclay and Michael DiPirro and Quan-Sheng Shu and Peter Kittel and Edward Daly and Hull, {John R.} and Jennifer Lock and Joseph Waynert and Susan Breon and James Maddocks and John Zbasnik and Kelley, {Patrick J.} and Arkadiy Klebaner",

booktitle = "Advances in Cryogenic Engineering",

}

Ishimoto, J, Ohno, R, Yanagi, H, Machida, A, Ikeuchi, M, Hattori, K & Ito, A 2004, Basic Study on Two-Phase Flow Characteristics of Slush Nitrogen in a Pipe. in J Pfotenhauer, S Van Sciver, A Zeller, J Demko, C Rey, JG Weisend II, J Barclay, M DiPirro, Q-S Shu, P Kittel, E Daly, JR Hull, J Lock, J Waynert, S Breon, J Maddocks, J Zbasnik, PJ Kelley & A Klebaner (eds), Advances in Cryogenic Engineering: Transactions of the Cryogenic Engineering Conference - CEC. AIP Conference Proceedings, vol. 710, American Institute of Physics Inc., pp. 1099-1106, 2003 Cryogenic Engineering Conference, CEC 2003, Anchorage, United States, 03/9/22. https://doi.org/10.1063/1.1774794

Basic Study on Two-Phase Flow Characteristics of Slush Nitrogen in a Pipe. / Ishimoto, J.; Ohno, R.; Yanagi, H. et al.
Advances in Cryogenic Engineering: Transactions of the Cryogenic Engineering Conference - CEC. ed. / John Pfotenhauer; Steven Van Sciver; Albert Zeller; Jonathan Demko; Christopher Rey; John G. Weisend II; John Barclay; Michael DiPirro; Quan-Sheng Shu; Peter Kittel; Edward Daly; John R. Hull; Jennifer Lock; Joseph Waynert; Susan Breon; James Maddocks; John Zbasnik; Patrick J. Kelley; Arkadiy Klebaner. American Institute of Physics Inc., 2004. p. 1099-1106 (AIP Conference Proceedings; Vol. 710).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Basic Study on Two-Phase Flow Characteristics of Slush Nitrogen in a Pipe

AU - Ishimoto, J.

AU - Ohno, R.

AU - Yanagi, H.

AU - Machida, A.

AU - Ikeuchi, M.

AU - Hattori, K.

AU - Ito, A.

PY - 2004/6/23

Y1 - 2004/6/23

N2 - The fundamental two-phase flow characteristics of slush nitrogen in a pipe are numerically and experimentally investigated to develop effective cooling performance for long distance superconducting cables. First, the governing equations of the two-phase slush nitrogen flow based on the unsteady thermal nonequilibrium two-fluid model are presented and several flow characteristics are numerically calculated taking into account the effects of slush volume fraction, particle diameter, and duct shape. Furthermore, in experimental study, minute slush is generated by the slush atomization nozzle and the unsteady pressure and temperature distributions of two-phase slush nitrogen flow along the longitudinal direction of pipe are measured. According to the numerical and experimental results, it is found that the reduction of the pressure loss by using slush is possible in the case of long distance pipe lengths. Also, optimized thermal flow conditions for cryogenic two-phase slush nitrogen with practical use of latent heat of slush melting are predicted for the development of new type superconducting cooling systems.

AB - The fundamental two-phase flow characteristics of slush nitrogen in a pipe are numerically and experimentally investigated to develop effective cooling performance for long distance superconducting cables. First, the governing equations of the two-phase slush nitrogen flow based on the unsteady thermal nonequilibrium two-fluid model are presented and several flow characteristics are numerically calculated taking into account the effects of slush volume fraction, particle diameter, and duct shape. Furthermore, in experimental study, minute slush is generated by the slush atomization nozzle and the unsteady pressure and temperature distributions of two-phase slush nitrogen flow along the longitudinal direction of pipe are measured. According to the numerical and experimental results, it is found that the reduction of the pressure loss by using slush is possible in the case of long distance pipe lengths. Also, optimized thermal flow conditions for cryogenic two-phase slush nitrogen with practical use of latent heat of slush melting are predicted for the development of new type superconducting cooling systems.

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T3 - AIP Conference Proceedings

SP - 1099

EP - 1106

BT - Advances in Cryogenic Engineering

A2 - Pfotenhauer, John

A2 - Van Sciver, Steven

A2 - Zeller, Albert

A2 - Demko, Jonathan

A2 - Rey, Christopher

A2 - Weisend II, John G.

A2 - Barclay, John

A2 - DiPirro, Michael

A2 - Shu, Quan-Sheng

A2 - Kittel, Peter

A2 - Daly, Edward

A2 - Hull, John R.

A2 - Lock, Jennifer

A2 - Waynert, Joseph

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A2 - Maddocks, James

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PB - American Institute of Physics Inc.

T2 - 2003 Cryogenic Engineering Conference, CEC 2003

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Ishimoto J, Ohno R, Yanagi H, Machida A, Ikeuchi M, Hattori K et al. Basic Study on Two-Phase Flow Characteristics of Slush Nitrogen in a Pipe. In Pfotenhauer J, Van Sciver S, Zeller A, Demko J, Rey C, Weisend II JG, Barclay J, DiPirro M, Shu Q-S, Kittel P, Daly E, Hull JR, Lock J, Waynert J, Breon S, Maddocks J, Zbasnik J, Kelley PJ, Klebaner A, editors, Advances in Cryogenic Engineering: Transactions of the Cryogenic Engineering Conference - CEC. American Institute of Physics Inc. 2004. p. 1099-1106. (AIP Conference Proceedings). doi: 10.1063/1.1774794

Basic Study on Two-Phase Flow Characteristics of Slush Nitrogen in a Pipe

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