A study on the mechanisms triggering the departure from nucleate boiling in subcooled vertical flow boiling using a complementary experimental approach

Gregor Bloch; Moritz Bruder; Thomas Sattelmayer

doi:10.1016/j.ijheatmasstransfer.2015.08.063

A study on the mechanisms triggering the departure from nucleate boiling in subcooled vertical flow boiling using a complementary experimental approach

Gregor Bloch, Moritz Bruder, Thomas Sattelmayer

Chair of Thermodynamics

Technical University of Munich

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

28 Scopus citations

Abstract

New experimental observations on the trigger mechanisms for the departure from nucleate boiling in subcooled flow boiling in a vertical, rectangular channel with an inner diameter of 40 mm are presented. A critical review of available mechanistic models and trigger mechanisms is given and a comparison to the experimental results is presented. Experimental results are derived using a matrix of complementary measuring techniques to review the validity of the proposed mechanisms for flow boiling of Novec 649. Mass fluxes are in the range of 500-2000 kg m^-2 s^-1 and subcoolings range from 27 to 9 K. A conceptualization for a refined phenomenological modeling approach is presented, and possible future research discussed.

Original language	English
Pages (from-to)	403-413
Number of pages	11
Journal	International Journal of Heat and Mass Transfer
Volume	92
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2015.08.063
State	Published - 1 Jan 2016

Keywords

CHF/DNB
Experimental validation
Flow boiling
Mechanistic modeling

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10.1016/j.ijheatmasstransfer.2015.08.063

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title = "A study on the mechanisms triggering the departure from nucleate boiling in subcooled vertical flow boiling using a complementary experimental approach",

abstract = "New experimental observations on the trigger mechanisms for the departure from nucleate boiling in subcooled flow boiling in a vertical, rectangular channel with an inner diameter of 40 mm are presented. A critical review of available mechanistic models and trigger mechanisms is given and a comparison to the experimental results is presented. Experimental results are derived using a matrix of complementary measuring techniques to review the validity of the proposed mechanisms for flow boiling of Novec 649. Mass fluxes are in the range of 500-2000 kg m-2 s-1 and subcoolings range from 27 to 9 K. A conceptualization for a refined phenomenological modeling approach is presented, and possible future research discussed.",

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AU - Bloch, Gregor

AU - Bruder, Moritz

AU - Sattelmayer, Thomas

PY - 2016/1/1

Y1 - 2016/1/1

N2 - New experimental observations on the trigger mechanisms for the departure from nucleate boiling in subcooled flow boiling in a vertical, rectangular channel with an inner diameter of 40 mm are presented. A critical review of available mechanistic models and trigger mechanisms is given and a comparison to the experimental results is presented. Experimental results are derived using a matrix of complementary measuring techniques to review the validity of the proposed mechanisms for flow boiling of Novec 649. Mass fluxes are in the range of 500-2000 kg m-2 s-1 and subcoolings range from 27 to 9 K. A conceptualization for a refined phenomenological modeling approach is presented, and possible future research discussed.

AB - New experimental observations on the trigger mechanisms for the departure from nucleate boiling in subcooled flow boiling in a vertical, rectangular channel with an inner diameter of 40 mm are presented. A critical review of available mechanistic models and trigger mechanisms is given and a comparison to the experimental results is presented. Experimental results are derived using a matrix of complementary measuring techniques to review the validity of the proposed mechanisms for flow boiling of Novec 649. Mass fluxes are in the range of 500-2000 kg m-2 s-1 and subcoolings range from 27 to 9 K. A conceptualization for a refined phenomenological modeling approach is presented, and possible future research discussed.

KW - CHF/DNB

KW - Experimental validation

KW - Flow boiling

KW - Mechanistic modeling

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JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

ER -

A study on the mechanisms triggering the departure from nucleate boiling in subcooled vertical flow boiling using a complementary experimental approach

Abstract

Keywords

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