液滴聚并自弹跳的数值模拟研究:基于改进的VOF方法

Translated title of the contribution: Numerical Simulation of Coalescence-Induced Self-Propelled Droplet Jumping: Based on an Improved VOF Method

Yuhang Wang, Wilko Rohlfs, Pingjian Ming*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)

Abstract

Coalescence-induced self-propelled jumping of droplet on superhydrophobic surfaces has attracted extensive interests as a result of huge engineering applications. At present, numerical simulation has become an important tool to study the dynamic characteristics of droplet jumping, in addition, a multiphase solver interFoam based on the volume-of-fluid (VOF) method in OpenFoam software package has widely been used to simulate the droplet jumping behaviors. However, there are still some drawbacks to handling the capillary flow issues. Considering this situation, a new multiphase solver SMICFoam based on the interFoam is selected in this work, and an improved VOF method is carried out by utilizing a new smooth interface compression scheme. This new solver has successfully been applied to the research of falling film, circular hydraulic jump, and droplet jumping. The comparison between the interFoam and the new solver shows that the former is not accurate enough to calculate the contact angle and three-phase contact line. The hysteretic values of contact angle and three-phase contact line calculated by interFoam leads to the larger excessive surface energy, the less kinetic energy, and the lower energy conversion efficiency, respectively.

Translated title of the contributionNumerical Simulation of Coalescence-Induced Self-Propelled Droplet Jumping: Based on an Improved VOF Method
Original languageChinese (Traditional)
Pages (from-to)1541-1546
Number of pages6
JournalKung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
Volume43
Issue number6
Publication statusPublished - Jun 2022
Externally publishedYes

Keywords

  • Coalescence-induced self-propelled droplet jumping
  • Contact angle
  • Energy analysis
  • Smooth interface compression
  • VOF method
  • NLA
  • n/a OA procedure

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