CHF-Transition Boiling

Hiroto Sakashita, Takaharu Tsuruta, Niro Nagai, Shoji Mori, Masahiro Shoji, Yoshihiko Haramura, Hiroyasu Ohtake, Wei Liu, Hisashi Umekawa, Yasuo Koizumi, Shinichi Morooka

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

This chapter deals with topics on critical heat flux (CHF) point and transition boiling in aspects of heat-transfer mechanisms based on both model simulations and measurements of each authors' research in recent decades. First three sections report heat-transfer modeling on CHF based on measurements and visualization results; i.e., macrolayer dryout model (Section 3.1), microlayer evaporation model (Section 3.2), and contact-line-length density model (Section 3.3). Section 3.4 demonstrates unique surface structures for enhancement of CHF. The following three sections cover other aspects of CHF and transition boiling mechanisms. Section 3.5 reports unified explanations for heater size dependence of CHF. Section 3.6 shows unique characteristics of transition boiling, i.e., negative differential resistance, and focuses on uniformity of surface temperature and heat flux during transition boiling. Section 3.7 discusses liquid-solid contact fraction in transition boiling region and derives correlation for transition boiling curve. The last four sections deal with CHF in flow boiling conditions. Section 3.8 discusses CHF triggering mechanisms and prediction methods in subcooled flow boiling. Section 3.9 shows influence of flow oscillation on convective boiling phenomena. Section 3.10 reports relation between appearance of dry patches and CHF in forced flow boiling. The last section 3.11 focuses on boiling transition phenomena and CHF for boiling water reactor (BWR) fuel assembly.

Original languageEnglish
Title of host publicationBoiling
Subtitle of host publicationResearch and Advances
PublisherElsevier
Pages145-368
Number of pages224
ISBN (Electronic)9780081011171
ISBN (Print)9780081010105
DOIs
Publication statusPublished - Jun 21 2017
Externally publishedYes

Fingerprint

Boiling liquids
Heat flux
Heat transfer
Boiling water reactors
Surface structure
Contacts (fluid mechanics)
Evaporation
Visualization
Liquids

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Sakashita, H., Tsuruta, T., Nagai, N., Mori, S., Shoji, M., Haramura, Y., ... Morooka, S. (2017). CHF-Transition Boiling. In Boiling: Research and Advances (pp. 145-368). Elsevier. https://doi.org/10.1016/B978-0-08-101010-5.00003-8

CHF-Transition Boiling. / Sakashita, Hiroto; Tsuruta, Takaharu; Nagai, Niro; Mori, Shoji; Shoji, Masahiro; Haramura, Yoshihiko; Ohtake, Hiroyasu; Liu, Wei; Umekawa, Hisashi; Koizumi, Yasuo; Morooka, Shinichi.

Boiling: Research and Advances. Elsevier, 2017. p. 145-368.

Research output: Chapter in Book/Report/Conference proceedingChapter

Sakashita, H, Tsuruta, T, Nagai, N, Mori, S, Shoji, M, Haramura, Y, Ohtake, H, Liu, W, Umekawa, H, Koizumi, Y & Morooka, S 2017, CHF-Transition Boiling. in Boiling: Research and Advances. Elsevier, pp. 145-368. https://doi.org/10.1016/B978-0-08-101010-5.00003-8
Sakashita H, Tsuruta T, Nagai N, Mori S, Shoji M, Haramura Y et al. CHF-Transition Boiling. In Boiling: Research and Advances. Elsevier. 2017. p. 145-368 https://doi.org/10.1016/B978-0-08-101010-5.00003-8
Sakashita, Hiroto ; Tsuruta, Takaharu ; Nagai, Niro ; Mori, Shoji ; Shoji, Masahiro ; Haramura, Yoshihiko ; Ohtake, Hiroyasu ; Liu, Wei ; Umekawa, Hisashi ; Koizumi, Yasuo ; Morooka, Shinichi. / CHF-Transition Boiling. Boiling: Research and Advances. Elsevier, 2017. pp. 145-368
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