Order-of-magnitude increase in flow velocity driven by mass conservation during the evaporation of sessile drops

Yoshinori Hamamoto, John R.E. Christy, Khellil Sefiane

研究成果: Contribution to journalArticle査読

35 被引用数 (Scopus)

抄録

We report on a dramatic order-of-magnitude increase in flow velocity within pinned evaporating droplets toward the end of their lifetime. The measurements were performed using high-speed microparticle image velocimetry. The study revealed interesting observations about the spatial and temporal evolution of the velocity field. The profile along the radius of the droplet is found to exhibit a maximum toward the three phase contact line with flow oscillations in time in this region. Additional optical measurements allowed further analysis of the observed trends. Analysis of the potential mechanisms responsible for the flow within the droplet demonstrated that these observations can be satisfactorily explained and accounted for by mass conservation within the droplet to compensate for evaporation.

本文言語英語
論文番号051602
ジャーナルPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
83
5
DOI
出版ステータス出版済み - 5 3 2011

All Science Journal Classification (ASJC) codes

  • 統計物理学および非線形物理学
  • 統計学および確率
  • 凝縮系物理学

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