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

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

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

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{aa1d199ff9ad45e1be836a48c8326914,

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

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.",

keywords = "Contact angle hysteresis, Front-tracking method, Generalized Navier boundary condition, Moving contact line, ANGLE HYSTERESIS, WALL, SHEAR-FLOW, MOVING CONTACT LINES, DETACHMENT, DEFORMATION, FLUID-FLOWS, DYNAMICS, NUMERICAL SIMULATIONS, SPREADING DROPLETS",

author = "Xinglong Shang and Zhengyuan Luo and Gatapova, {Elizaveta Ya} and Kabov, {Oleg A.} and Bofeng Bai",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = aug,

day = "30",

doi = "10.1016/j.compfluid.2018.06.021",

language = "English",

volume = "172",

pages = "181--195",

journal = "Computers and Fluids",

issn = "0045-7930",

publisher = "Elsevier Ltd",

}

RIS

TY - JOUR

T1 - GNBC-based front-tracking method for the three-dimensional simulation of droplet motion on a solid surface

AU - Shang, Xinglong

AU - Luo, Zhengyuan

AU - Gatapova, Elizaveta Ya

AU - Kabov, Oleg A.

AU - Bai, Bofeng

PY - 2018/8/30

Y1 - 2018/8/30

N2 - 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.

AB - 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.

KW - Contact angle hysteresis

KW - Front-tracking method

KW - Generalized Navier boundary condition

KW - Moving contact line

KW - ANGLE HYSTERESIS

KW - WALL

KW - SHEAR-FLOW

KW - MOVING CONTACT LINES

KW - DETACHMENT

KW - DEFORMATION

KW - FLUID-FLOWS

KW - DYNAMICS

KW - NUMERICAL SIMULATIONS

KW - SPREADING DROPLETS

UR - http://www.scopus.com/inward/record.url?scp=85049792710&partnerID=8YFLogxK

U2 - 10.1016/j.compfluid.2018.06.021

DO - 10.1016/j.compfluid.2018.06.021

M3 - Article

AN - SCOPUS:85049792710

VL - 172

SP - 181

EP - 195

JO - Computers and Fluids

JF - Computers and Fluids

SN - 0045-7930

ER -

ID: 23777423