Numerical simulation of the coffee-ring effect inside containers with time-dependent evaporation rate

Hyundong Kim, Junxiang Yang, Sangkwon Kim, Chaeyoung Lee, Sungha Yoon, Soobin Kwak, Junseok Kim

Research output: Contribution to journalArticlepeer-review

Abstract

In this work, using a mathematical model and numerical simulation, we investigate the effect of time-dependent evaporation rates on stripe formation inside containers. This pattern formation is driven by the coffee-ring effect. The coffee particles inside a container move according to random walk and under the gravitational force. Because of the time-dependent evaporation rate, we can observe stripe formation inside a container after evaporation of the coffee particle-laden liquid. Various numerical experiments are performed to demonstrate the proposed model can simulate the stripe formation in a container.

Original languageEnglish
JournalTheoretical and Computational Fluid Dynamics
DOIs
Publication statusAccepted/In press - 2022

Keywords

  • Coffee-ring effect
  • Stripe formation
  • Time-dependent evaporation rate

ASJC Scopus subject areas

  • Computational Mechanics
  • Condensed Matter Physics
  • Engineering(all)
  • Fluid Flow and Transfer Processes

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