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

Date

2016-06-01

Author

Jafari, Rahim
Okutucu Özyurt, Hanife Tuba

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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/m(2) 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.

Subject Keywords

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

URI

https://hdl.handle.net/11511/56484

Journal

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER

DOI

https://doi.org/10.1016/j.ijheatmasstransfer.2016.02.028

Collections

Department of Mechanical Engineering, Article

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Citation Formats

R. Jafari and H. T. Okutucu Özyurt, “Numerical simulation of flow boiling from an artificial cavity in a microchannel,” INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, pp. 270–278, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/56484.