Development of the vapor film thickness correlation in porous corrosion deposits on the cladding in PWR

Yuan Shen; Zhengang Duan; Chuan Lu; Li Ji; Caishan Jiao; Hongguo Hou; Nan Chao; Meng Zhang; Yu Zhou; Yang Gao

Nuclear Engineering and Technology (Dec 2022)

Development of the vapor film thickness correlation in porous corrosion deposits on the cladding in PWR

Yuan Shen,
Zhengang Duan,
Chuan Lu,
Li Ji,
Caishan Jiao,
Hongguo Hou,
Nan Chao,
Meng Zhang,
Yu Zhou,
Yang Gao

Affiliations

Yuan Shen: Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, Heilongjiang Province, China
Zhengang Duan: Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610041, Sichuan Province, China
Chuan Lu: Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610041, Sichuan Province, China
Li Ji: Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, Heilongjiang Province, China
Caishan Jiao: Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, Heilongjiang Province, China
Hongguo Hou: Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, Heilongjiang Province, China
Nan Chao: Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, Heilongjiang Province, China
Meng Zhang: Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, Heilongjiang Province, China
Yu Zhou: Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, Heilongjiang Province, China; Corresponding author.
Yang Gao: Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, Heilongjiang Province, China; Corresponding author.

Journal volume & issue: Vol. 54, no. 12
pp. 4798 – 4808

Abstract

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The porous corrosion deposits (known as CRUD) adhered to the cladding have an important effect on the heat transfer from fuel rods to coolant in PWRs. The vapor film is the main constituent in the two-phase film boiling model. This paper presents a vapor film thickness correlation, associated with CRUD porosity, CRUD chimney density, CRUD particle size, CRUD thickness and heat flux. The dependences of the vapor film thickness on the various influential factors can be intuitively reflected from this vapor film thickness correlation. The temperature, pressure, and boric acid concentration distributions in CRUD can be well predicted using the two-phase film boiling model coupled with the vapor film thickness correlation. It suggests that the vapor thickness correlation can estimate the vapor film thickness more conveniently than the previously reported vapor thickness calculation methods.

Published in Nuclear Engineering and Technology

ISSN: 1738-5733 (Print)
Publisher: Elsevier
Country of publisher: Korea, Republic of
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Nuclear engineering. Atomic power
Website: http://www.journals.elsevier.com/nuclear-engineering-and-technology

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