GNBC-based front-tracking method for the three-dimensional simulation of droplet motion on a solid surface

Xinglong Shang, Zhengyuan Luo, Elizaveta Ya Gatapova, Oleg A. Kabov, Bofeng Bai

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Previous front-tracking (FT) method-based models to simulate droplet motion on a solid surface with a moving contact line (MCL) are limited to two-dimensional models in which the Navier boundary condition (NBC) is employed for the MCL. In this paper, we develop a three-dimensional FT method that integrates the generalized Navier boundary condition (GNBC) to model the MCL. This GNBC-based FT method addresses several key issues, such as the integration of GNBC for the dynamic description of the MCL and its coupling with the surrounding flow, the accurate updating of the density and viscosity of the two-phase fluid near the contact line, and the restructuring of the Lagrangian mesh for tracking the drop surface, especially near the contact line. The stability and accuracy of the present numerical method are validated by several tests: (1) numerical performance tests, (2) simulation of the transient and steady-state shapes of droplets under flow with a fixed contact line, and (3) simulation of a droplet spreading under gravity and moving under a shear flow with MCLs. Excellent agreement is achieved between the results obtained by our model and the data obtained by other theoretical and numerical approaches.

Original languageEnglish
Pages (from-to)181-195
Number of pages15
JournalComputers and Fluids
Volume172
DOIs
Publication statusPublished - 30 Aug 2018

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Boundary conditions
Contacts (fluid mechanics)
Convergence of numerical methods
Shear flow
Numerical methods
Gravitation
Viscosity
Fluids

Keywords

  • Contact angle hysteresis
  • Front-tracking method
  • Generalized Navier boundary condition
  • Moving contact line

ASJC Scopus subject areas

  • Computer Science(all)
  • Engineering(all)

Cite this

GNBC-based front-tracking method for the three-dimensional simulation of droplet motion on a solid surface. / Shang, Xinglong; Luo, Zhengyuan; Gatapova, Elizaveta Ya; Kabov, Oleg A.; Bai, Bofeng.

In: Computers and Fluids, Vol. 172, 30.08.2018, p. 181-195.

Research output: Contribution to journalArticle

Shang, Xinglong ; Luo, Zhengyuan ; Gatapova, Elizaveta Ya ; Kabov, Oleg A. ; Bai, Bofeng. / GNBC-based front-tracking method for the three-dimensional simulation of droplet motion on a solid surface. In: Computers and Fluids. 2018 ; Vol. 172. pp. 181-195.
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AU - Bai, Bofeng

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