A Deep Learning Perspective on Dropwise Condensation

Youngjoon Suh, Jonggyu Lee, Peter Simadiris, Xiao Yan, Soumyadip Sett, Longnan Li, Kazi Fazle Rabbi, Nenad Miljkovic, Yoonjin Won

Research output: Contribution to journalArticlepeer-review

Abstract

Condensation is ubiquitous in nature and industry. Heterogeneous condensation on surfaces is typified by the continuous cycle of droplet nucleation, growth, and departure. Central to the mechanistic understanding of the thermofluidic processes governing condensation is the rapid and high-fidelity extraction of interpretable physical descriptors from the highly transient droplet population. However, extracting quantifiable measures out of dynamic objects with conventional imaging technologies poses a challenge to researchers. Here, an intelligent vision-based framework is demonstrated that unites classical thermofluidic imaging techniques with deep learning to fundamentally address this challenge. The deep learning framework can autonomously harness physical descriptors and quantify thermal performance at extreme spatio-temporal resolutions of 300 nm and 200 ms, respectively. The data-centric analysis conclusively shows that contrary to classical understanding, the overall condensation performance is governed by a key tradeoff between heat transfer rate per individual droplet and droplet population density. The vision-based approach presents a powerful tool for the study of not only phase-change processes but also any nucleation-based process within and beyond the thermal science community through the harnessing of big data.

Original languageEnglish (US)
Article number2101794
JournalAdvanced Science
Volume8
Issue number22
DOIs
StatePublished - Nov 17 2021

Keywords

  • AI computer vision
  • deep learning
  • droplet statistics
  • dropwise condensation
  • real-time heat transfer mapping

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Chemical Engineering(all)
  • Materials Science(all)
  • Biochemistry, Genetics and Molecular Biology (miscellaneous)
  • Engineering(all)
  • Physics and Astronomy(all)

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