Simulations of microlayer formation in nucleate boiling
Name
Simulations_of_microlayer_formation_in_nucleate_bo.pdf
Description
Accepted version
Size
1.24 MB
Format
Adobe PDF
Checksum (MD5)
2146b43126ee902335114a27ef8bba6e
Author(s)
Guion, Alexandre Nicolas
Zaleski, Stéphane
Buongiorno, Jacopo
Date Issued
December 2018
Journal
International Journal of Heat and Mass Transfer
Publisher
Elsevier BV
Citation
Guion, Alexandre, Shahriar Afkhami, Stéphane Zaleski, and Jacopo Buongiornoa. "Simulations of microlayer formation in nucleate boiling." International Journal of Heat and Mass Transfer 127 (2018): 1271-1284 © 2018 The Author(s)
Version
Author's final manuscript
Abstract
As a bubble grows outside of a cavity during nucleate boiling, viscous effects can be large enough compared to surface tension to impede liquid motion and trap a thin liquid layer, referred to as the microlayer, underneath the growing bubble. Numerical simulations of nucleate boiling typically resolve the macroscopic liquid-vapor interface of the bubble, but resort to subgrid models to account for micro scale effects, such as the evaporation of the microlayer. Evaporation models require initialization of the microlayer shape and extension, but models for microlayer formation are either physically incomplete or purely empirical. In this work, the Volume-Of-Fluid (VOF) method, implemented in the Gerris code, is used to numerically reproduce the hydrodynamics of hemispherical bubble growth at the wall, and resolve the formation of the microlayer with an unprecedented resolution. The simulations are validated against the latest experimental data and compared to existing analytical models. Lastly, remaining gaps in building a generally applicable model for the formation of the microlayer are presented.
Subjects
Mechanical Engineering
Condensed Matter Physics
Fluid Flow and Transfer Processes
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/j.ijheatmasstransfer.2018.06.041
