Minimum heat-flux point and liquid-solid contact during rapid quenching of thin wires

Hiroshi Honda, Hiroshi Takamatsu, Hikaru Yamashiro

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Rapid quenching of thin horizontal platinum wires falling at a constant speed was studied experimentally using pure water and ethanol as the quenching liquids. The transient boiling curve obtained from the cooling curve had two local minimum heat-flux (MHF) points. Measurements of liquid-solid contact and observations of boiling patterns showed that a marked liquid-solid contact began at the first (higher wall superheat) MHF point M1. The heat-transfer results indicated that the M1 point corresponded to the minimum vapor film thickness for stable film boiling. The effects of liquid subcooling and falling velocity on the average vapor film thickness and the wall superheat at the M1 point were explained. The wall superheat at the second MHF point M2 was almost constant for each liquid regardless of the liquid subcooling and the falling velocity.

Original languageEnglish
Pages (from-to)517-537
Number of pages21
JournalHeat Transfer - Japanese Research
Volume24
Issue number6
Publication statusPublished - Dec 1 1995

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Rapid quenching
Contacts (fluid mechanics)
Heat flux
heat flux
wire
Wire
Liquids
liquids
falling
Boiling liquids
boiling
Film thickness
film thickness
Vapors
vapors
film boiling
curves
Platinum
Quenching
platinum

All Science Journal Classification (ASJC) codes

  • Fluid Flow and Transfer Processes

Cite this

Minimum heat-flux point and liquid-solid contact during rapid quenching of thin wires. / Honda, Hiroshi; Takamatsu, Hiroshi; Yamashiro, Hikaru.

In: Heat Transfer - Japanese Research, Vol. 24, No. 6, 01.12.1995, p. 517-537.

Research output: Contribution to journalArticle

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