Abstract
The Stokes–Reynolds–Young–Laplace (SRYL) model of film drainage for pure liquid and surfactant solution systems have been numerically solved with a simplified Young-Laplace equation in several literatures. However, with this simplification, the calculated profile of the tangential shear stress τb at the gas sides had an unphysical increment at the boundary of the computational domain, which violated the continuity in shear stress especially when inhibitory effect of surfactants on film drainage was considered. In this work, an improved model of film drainage was proposed by modifying the simplified Young-Laplace equation and artificial initial shape of the liquid film. The underlying reason for unreasonable τb caused by the simplified Young-Laplace equation was analyzed. This improvement avoided the unphysical sharp increase of τb at the boundary of the computational domain for both pure liquid and surfactant solution systems, which was critical to extend the SRYL model of film drainage to some complex systems.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.