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Vish Prasad (open in a new tab) Department of Mechanical Engineering, University of North Texas, Denton, Texas 76207, USA
Yogesh Jaluria (open in a new tab) Department of Mechanical and Aerospace Engineering, Rutgers-New Brunswick, The State University of New Jersey, Piscataway, NJ 08854, USA
Zhuomin M. Zhang (open in a new tab) George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA

ISSN Print: 1049-0787

ISSN Online: 2375-0294

SJR: 0.363 SNIP: 0.21 CiteScore™:: 1.8

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MECHANISTIC MODELING OF DRYOUT

pages 59-88
DOI: 10.1615/AnnualRevHeatTransfer.2020033346
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摘要

Dryout is the mechanism responsible for the occurrence of critical heat flux (CHF) at high quality, i.e., in annular two-phase flow regimes. Its prediction is of paramount importance in determination of the thermal margin of boiling water reactors (BWRs). Similar phenomena are also observed in loss of flow (or coolant) accidents in both pressurized water reactors (PWRs) and BWRs. The mechanistic model reduces the level of empiricism by using correlations to predict more basic annular flow dynamics. This allows prediction of untested geometries with reasonable confidence. This chapter gives an account of the mechanistic modeling of annular Bow and its application to both tubular as well as rod bundle geometry.

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