Acoustothermal Atomization of Water Nanofilms

Rohit Pillai; Matthew Borg; Jason Reese

doi:10.1103/PhysRevLett.121.104502

Acoustothermal Atomization of Water Nanofilms

Rohit Pillai
, Matthew Borg
, Jason Reese

School of Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

We report nonequilibrium molecular simulations of the vibration-induced heating of nanoscale-thick water layers on a metal substrate. In addition to experimentally confirmed acoustothermal evaporation, we observe hitherto unmapped nucleate and film boiling regimes, accompanied by the generation of unprecedented heat fluxes [∼O(109) W/m2]. We develop a universal scaling parameter to classify the heat-transfer regimes and to predict the thickness of the residual nonevaporating liquid layer. The results find broad application to systems involving drying, coatings, and sprays.

Original language	English
Article number	104502
Journal	Physical Review Letters
Volume	121
Issue number	10
Early online date	7 Sept 2018
DOIs	https://doi.org/10.1103/PhysRevLett.121.104502
Publication status	E-pub ahead of print - 7 Sept 2018

Keywords / Materials (for Non-textual outputs)

instability of free-surface flows
Nanofluidics
noncontinuum effects in nanoscale flows
nanobubbles
thin fluid films

Access to Document

10.1103/PhysRevLett.121.104502Licence: Creative Commons: Attribution (CC-BY)

RohitEtAlPRL2018Final published version, 1.68 MB

PYRAMID: a platform for multiscale design, from molecules to machines
Reese, J. (Principal Investigator)
UK-based charities
1/03/18 → 30/09/20
Project: Research
From Kinetic Theory to Hydrodynamics: re-imagining two fluid models of particle-laden flows
Borg, M. (Principal Investigator) & Reese, J. (Co-investigator)
EPSRC
1/10/17 → 30/09/21
Project: Research
Nano-Engineered Flow Technologies: Simulation for Design across Scale and Phase
Reese, J. (Principal Investigator) & Borg, M. (Researcher)
EPSRC
1/01/16 → 31/12/21
Project: Research

Acoustothermal atomization of water nanofilms
Pillai, R. (Creator), Borg, M. (Creator) & Reese, J. (Creator), Edinburgh DataShare, 14 Aug 2018
DOI: 10.7488/ds/2415
Dataset

Rohit Pillai
- School of Engineering - Senior Lecturer
Person: Academic: Research Active

Cite this

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title = "Acoustothermal Atomization of Water Nanofilms",

abstract = "We report nonequilibrium molecular simulations of the vibration-induced heating of nanoscale-thick water layers on a metal substrate. In addition to experimentally confirmed acoustothermal evaporation, we observe hitherto unmapped nucleate and film boiling regimes, accompanied by the generation of unprecedented heat fluxes [∼O(109) W/m2]. We develop a universal scaling parameter to classify the heat-transfer regimes and to predict the thickness of the residual nonevaporating liquid layer. The results find broad application to systems involving drying, coatings, and sprays.",

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AU - Borg, Matthew

AU - Reese, Jason

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N2 - We report nonequilibrium molecular simulations of the vibration-induced heating of nanoscale-thick water layers on a metal substrate. In addition to experimentally confirmed acoustothermal evaporation, we observe hitherto unmapped nucleate and film boiling regimes, accompanied by the generation of unprecedented heat fluxes [∼O(109) W/m2]. We develop a universal scaling parameter to classify the heat-transfer regimes and to predict the thickness of the residual nonevaporating liquid layer. The results find broad application to systems involving drying, coatings, and sprays.

AB - We report nonequilibrium molecular simulations of the vibration-induced heating of nanoscale-thick water layers on a metal substrate. In addition to experimentally confirmed acoustothermal evaporation, we observe hitherto unmapped nucleate and film boiling regimes, accompanied by the generation of unprecedented heat fluxes [∼O(109) W/m2]. We develop a universal scaling parameter to classify the heat-transfer regimes and to predict the thickness of the residual nonevaporating liquid layer. The results find broad application to systems involving drying, coatings, and sprays.

KW - instability of free-surface flows

KW - Nanofluidics

KW - noncontinuum effects in nanoscale flows

KW - nanobubbles

KW - thin fluid films

U2 - 10.1103/PhysRevLett.121.104502

DO - 10.1103/PhysRevLett.121.104502

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JO - Physical Review Letters

JF - Physical Review Letters

IS - 10

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ER -

Acoustothermal Atomization of Water Nanofilms

Abstract

Keywords / Materials (for Non-textual outputs)

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Projects

PYRAMID: a platform for multiscale design, from molecules to machines

From Kinetic Theory to Hydrodynamics: re-imagining two fluid models of particle-laden flows

Nano-Engineered Flow Technologies: Simulation for Design across Scale and Phase

Datasets

Acoustothermal atomization of water nanofilms

Profiles

Rohit Pillai

Cite this