Stability of gravity-driven liquid films overflowing microstructures with sharp corners

  title={Stability of gravity-driven liquid films overflowing microstructures with sharp corners},
  author={Henning Bonart and Sangitha Rajes and Johannes Jung and Jens-Uwe Repke},
  journal={arXiv: Fluid Dynamics},
We are concerned with the stability of thin liquid films overflowing single microstructures with sharp corners. The microstructures were of rectangular and triangular shape. Their heights and widths were 0.25, 0.5 and 0.75 times the Nusselt film thickness. To observe smooth, wavy and very unstable films we performed simulations with Reynolds numbers ranging from 10 to 70. The dynamics of the liquid film and the overflowing gas phase were described by the coupling between the Cahn-Hilliard and… 

Figures and Tables from this paper

A Supine Position and Dual-Dose Applications Enhance Spray Dosing to the Posterior Nose: Paving the Way for Mucosal Immunization

It is feasible to effectively deliver medications to the posterior nose by leveraging liquid film translocation for mucosal immunization by developing a new delivery protocol that can effectively deliver sprays to the caudal turbinate and nasopharynx.



Toward Greater Public Health Relevance for Psychotherapeutic Intervention Research: An NIMH Workshop Report

More research is needed to assess stakeholders’ needs, to better understand techniques commonly used in clinical practice, and to test efficacious treatments in community settings, which will require increased collaboration across different disciplines, development of new research methods, and a willingness for investigators to ask novel research questions.

Positive Polynomials in Control

From the contents: Part I Control Applications of Polynomial Positivity Control Applications of Sum of Squares Programming Analysis of Non-polynomial Systems Using the Sum of Squares Decomposition A

Numerical modeling of multiphase flows in microfluidics and micro process engineering: a review of methods and applications

This article presents a comprehensive review of numerical methods and models for interface resolving simulations of multiphase flows in microfluidics and micro process engineering. The focus of the

Journal of Fluid Mechanics创刊50周年

流体力学杂志“Journal of Fluid Mechanics”由剑桥大学教授George

Effect of wall corrugations on scalar transfer to a wavy falling liquid film

  • G. Dietze
  • Physics
    Journal of Fluid Mechanics
  • 2018
Direct numerical simulation is employed to study the effect of small-scale wall corrugations on scalar transfer through the wavy surface of a vertically falling liquid film in interaction with a

Film flow down an inclined plane over a three-dimensional obstacle

The low-Reynolds-number flow of a liquid film down an inclined plane wall over a particle attached to the wall is considered. The effect of the particle is described on the assumption that the free

Dynamics and stability of thin liquid films

The dynamics and stability of thin liquid films have fascinated scientists over many decades: the observations of regular wave patterns in film flows down a windowpane or along guttering, the

and s

Influence of Liquid Density and Surface Tension on the Pinning of Sliding Droplets on a Triangular Microstructure

DFG, 188264188, GRK 1754: Optimierung und Numerik fur partielle Differentialgleichungen mit nicht glatten Strukturen

Numerical Methods for Partial Differential Equations (PDF)

This graduate-level course is an advanced introduction to applications and theory of numerical methods for solution of differential equations. In particular, the course focuses on physically-arising