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Research Papers: Evaporation, Boiling, and Condensation

Experimental Investigation of Wall Nucleation Characteristics in Flow Boiling

[+] Author and Article Information
Caleb S. Brooks

School of Nuclear Engineering,
Purdue University,
West Lafayette, IN 47907
e-mail: csbrooks@purdue.edu

Nicolás Silin

CONICET–CNEA–Instituto Balseiro,
Bariloche, Rio Negro 8400, Argentina
e-mail: silin@cab.cnea.gov.ar

Takashi Hibiki

School of Nuclear Engineering,
Purdue University,
West Lafayette, IN 47907
e-mail: hibiki@ecn.purdue.edu

Mamoru Ishii

School of Nuclear Engineering,
Purdue University,
West Lafayette, IN 47907
e-mail: ishii@purdue.edu

1Corresponding author.

2Present address: University of Illinois at Urbana-Champaign, Department of Nuclear, Plasma, and Radiological Engineering, Talbot Laboratory, 104 South Wright Street, Urbana, IL 61801, e-mail: csbrooks@illinois.edu

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received August 13, 2013; final manuscript received December 30, 2014; published online February 3, 2015. Assoc. Editor: Cila Herman.

J. Heat Transfer 137(5), 051501 (May 01, 2015) (9 pages) Paper No: HT-13-1412; doi: 10.1115/1.4029593 History: Received August 13, 2013; Revised December 30, 2014; Online February 03, 2015

Wall nucleation experiments have been performed in a vertical annulus test section for investigation of the bubble departure diameter and bubble departure frequency. The experimental data in forced convective subcooled boiling flow is presented as a parametric study of the effect of wall heat flux, local bulk liquid subcooling, liquid flow rate, and system pressure. The data are shown to extend the database currently available in literature to a wider range of system conditions. Along with the current database in forced convective flow, the available models for bubble departure size and frequency are reviewed and compared with the existing database. The prediction of the bubble departure frequency is shown to require accurate modeling of the bubble departure diameter which has poor agreement with the experimental database.

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References

Figures

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Fig. 1

Schematic of the experimental test section

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Fig. 2

Effect of liquid velocity on bubble departure diameter and frequency

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Fig. 3

Effect of local bulk liquid subcooling on bubble departure diameter and frequency

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Fig. 4

Effect of wall heat flux on bubble departure diameter and frequency

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Fig. 5

Comparison of available bubble departure diameter models with the available bubble departure diameter database: model by Unal [3], model by Kocamustafaogullari and Ishii [5], and model by Prodanovic et al. [7]

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Fig. 6

Comparison of available bubble departure frequency models with the available bubble departure frequency database: model by Cole [9], model by Basu et al. [10], and model by Situ et al. [11]

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