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

Rahim Jafari; Tuba Okutucu-Özyurt

doi:10.1016/j.ijheatmasstransfer.2016.02.028

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 journal › Article › peer-review

48 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 language	English
Pages (from-to)	270-278
Number of pages	9
Journal	International Journal of Heat and Mass Transfer
Volume	97
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2016.02.028
Publication status	Published - 1 Jun 2016
Externally published	Yes

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 .

Funders	Funder number
TUBİTAK	112M168
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

Keywords

Artificial cavity
Bubble nucleation
Evaporation
Microchannel
Numerical simulation
Subcooled water

Access to Document

10.1016/j.ijheatmasstransfer.2016.02.028

Cite this

@article{dfaa02a26a3548248cf240e1997b8209,

title = "Numerical simulation of flow boiling from an artificial cavity in a microchannel",

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.",

keywords = "Artificial cavity, Bubble nucleation, Evaporation, Microchannel, Numerical simulation, Subcooled water",

author = "Rahim Jafari and Tuba Okutucu-{\"O}zyurt",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd",

year = "2016",

month = jun,

day = "1",

doi = "10.1016/j.ijheatmasstransfer.2016.02.028",

language = "English",

volume = "97",

pages = "270--278",

journal = "International Journal of Heat and Mass Transfer",

issn = "0017-9310",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Numerical simulation of flow boiling from an artificial cavity in a microchannel

AU - Jafari, Rahim

AU - Okutucu-Özyurt, Tuba

PY - 2016/6/1

Y1 - 2016/6/1

N2 - 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.

AB - 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.

KW - Artificial cavity

KW - Bubble nucleation

KW - Evaporation

KW - Microchannel

KW - Numerical simulation

KW - Subcooled water

UR - http://www.scopus.com/inward/record.url?scp=84977630973&partnerID=8YFLogxK

U2 - 10.1016/j.ijheatmasstransfer.2016.02.028

DO - 10.1016/j.ijheatmasstransfer.2016.02.028

M3 - Article

AN - SCOPUS:84977630973

SN - 0017-9310

VL - 97

SP - 270

EP - 278

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

ER -

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

Abstract

Bibliographical note

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this