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Full-Text Articles in Physical Sciences and Mathematics
Numerical Simulations Of Thin Viscoelastic Films, Valeria Barra
Numerical Simulations Of Thin Viscoelastic Films, Valeria Barra
Dissertations
This dissertation is developed in the field of Computational Fluid Dynamics (CFD) and it focuses on numerical simulations of the dynamics of thin viscoelastic films in different settings. The first part of this dissertation presents a novel computational investigation of thin viscoelastic films and drops, that are subject to the van der Waals interaction force, in two spatial dimensions. The liquid films are deposited on a flat solid substrate, that can have a zero or nonzero inclination with respect to the base. The equation that governs the interfacial dynamics of the thin films and drops is obtained within the long-wave …
Methods For The Direct Simulation Of Nanoscale Film Breakup And Contact Angles, Kyle Mahady
Methods For The Direct Simulation Of Nanoscale Film Breakup And Contact Angles, Kyle Mahady
Dissertations
This thesis investigates direct simulation of fluids with free surfaces and contact lines, with a focus on capturing nanoscale physics in a continuum based computational framework. Free surfaces and contact lines have long presented some of the most challenging problems in computational fluid dynamics. Extensive progress has been made in recent years, and a wide variety of different methods are currently employed for direct simulation in these contexts. The complexity of the full governing equations for such flows poses significant challenges in terms of analytical techniques, and leads to lengthy computational times for direct simulations. For these reasons, reduced models …