Skip to Main content Skip to Navigation
Journal articles

Direct numerical simulation of nucleate boiling in micro-layer regime

Abstract : The physical mechanisms associated with the evolution of a micro-layer beneath a bubble and the transition between contact line and micro-layer regimes are investigated with fully resolved numerical simulations, in the framework of nucleate pool boiling. Capturing the transition between these two regimes has been possible for the first time using very refined grids and parallel computations. Indeed, grids with a cell size under 1 l m must be used in order to capture thermal and dynamical effects in the micro-layer. Such multiscale computations require advanced code capabilities. The present simulations are used to analyse the physical processes involved in the formation and depletion of a micro-layer. A parametric study is carried out to investigate the impact of the main parameters affecting the presence of the micro-layer. From these results, the limit conditions between nucleate boiling in micro-layer and contact line regimes are deduced. Neglecting the micro-layer would lead to erroneous results because it has a strong influence on the overall bubble growth. Therefore the present results could be of major interest for designing models of nucleate pool boiling in larger scales computations, when the micro-layer cannot be resolved.
Complete list of metadata

Cited literature [54 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01793518
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Wednesday, May 16, 2018 - 4:12:12 PM
Last modification on : Wednesday, May 12, 2021 - 3:01:57 AM
Long-term archiving on: : Tuesday, September 25, 2018 - 8:03:08 AM

File

Urbano_19833.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Annafederica Urbano, Sébastien Tanguy, Grégory Huber, Catherine Colin. Direct numerical simulation of nucleate boiling in micro-layer regime. International Journal of Heat and Mass Transfer, Elsevier, 2018, vol. 123, pp. 1128-1137. ⟨10.1016/j.ijheatmasstransfer.2018.02.104⟩. ⟨hal-01793518⟩

Share

Metrics

Record views

95

Files downloads

624