A Novel Slip Boundary Condition for Contact Angle Modeling Using Phase-Field Methods

ORAL

Abstract

This work introduces a novel slip boundary condition designed to enforce a given contact angle in phase-field simulations. Unlike traditional methods, which typically alter the mass transport equation or impose an arbitrary Navier-slip boundary condition, this approach is motivated from a momentum balance at the wall. This physics-based boundary condition enables the seamless integration of contact angle physics into phase-field simulations. In this talk, the boundary condition, which takes the form of a PDE that is advanced discretely in time, is derived and results are shown for various static contact angles. Following this, the boundary condition is coupled with various pre-existing models for the dynamic contact angle. Results for a drop sliding down an inclined plane are then shown.

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Presenters

  • Lucy J Brown

    Center for Turbulence Research, Stanford University, Center for Turbulence Research

Authors

  • Lucy J Brown

    Center for Turbulence Research, Stanford University, Center for Turbulence Research

  • Suhas Jain

    Woodruff School of Mechanical Engineering, Georgia Institute of Technology, USA. Center for Turbulence Research, Stanford Universty, USA, Georgia Institute of Technology, Flow Physics and Computational Sciences Lab, Woodruff School of Mechanical Engineering, Georgia Tech, Flow Physics and Computational Science Lab, Georgia Institute of Technology, Atlanta, Georgia, 30332, USA, Woodruff School of Mechanical Engineering, Georgia Institute of Technology; Center for Turbulence Research, Stanford University, George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA

  • Parviz Moin

    Center for Turbulence Research, Stanford University, Stanford University