Numerical simulation of flow boiling from an artificial cavity in a microchannel

Rahim Jafari, Tuba Okutucu-Özyurt*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

Cahn–Hilliard phase-field method is used to numerically simulate subcooled water boiling in which nucleation occurs from an artificial cavity on the inner surface of a microchannel. The boiling initiates from a cavity and the growth and departure of the nucleated bubbles from the cavity are simulated. The velocity, temperature and pressure distributions inside the microchannel have been analyzed. The bubble generation frequency increases by increasing inlet mass flux. For this case of study, the rising trend continues up to the mass flux of 64 kg/m2 s. Further increase in the inlet mass flux does not accelerate the bubble formation. The radius and the shape of the generated bubble compared well with experimental data available in the literature.

Original languageEnglish
Pages (from-to)270-278
Number of pages9
JournalInternational Journal of Heat and Mass Transfer
Volume97
DOIs
Publication statusPublished - 1 Jun 2016
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2016 Elsevier Ltd

Funding

This study is financially supported by the Scientific and Technological Research Council of Turkey (TUBİTAK) under grant number 112M168 .

FundersFunder number
TUBİTAK112M168
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

    Keywords

    • Artificial cavity
    • Bubble nucleation
    • Evaporation
    • Microchannel
    • Numerical simulation
    • Subcooled water

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