*Result*: Phase-field modeling and computer simulation of the coffee-ring effect.

Title:
Phase-field modeling and computer simulation of the coffee-ring effect.
Authors:
Yang, Junxiang1, Kim, Hyundong1, Lee, Chaeyoung1, Kim, Sangkwon1, Wang, Jian1, Yoon, Sungha1, Park, Jintae1, Kim, Junseok1 cfdkim@korea.ac.kr
Source:
Theoretical & Computational Fluid Dynamics. Dec2020, Vol. 34 Issue 5/6, p679-692. 14p.
Subject Terms:
*COMPUTER simulation, *RANDOM walks, *GRAVITATION, *GAUSSIAN distribution, *SIMULATION methods & models, *MONTE Carlo method
Database:
Academic Search Index

*Further Information*

*In this study, we propose a novel computational model for simulating the coffee-ring phenomenon. The proposed method is based on a phase-field model and Monte Carlo simulation. We use the Allen–Cahn equation with a pinning boundary condition to model a drying droplet. The coffee particles inside the droplet move according to a random walk function with a truncated standard normal distribution under gravitational force. We perform both two-dimensional and three-dimensional computational experiments to demonstrate the accurate simulation of the coffee-ring phenomenon by the proposed model. [ABSTRACT FROM AUTHOR]*