A consistent and parallelized height function based scheme for applying contact angle to 3D volume-of-fluid simulations

New discovery was found by the capillary experiments with circular glass tubes and partial-wetting liquids that the partial liquid volume under moon surface could be expressed by equivalent height function H(r). Contact angle models suggested in this work, evaluated by Eq. 5, was eventually given by the concept of equivalent height, and so-determined models presented a much higher accuracy on prediction of contact angle compared to Jurin formula.

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Towards 3D Volume-of-Fluid Methods Featuring Subgrid-Scale Capturing of Interface Curvature

Volume 1C, Symposia: Fundamental Issues and Perspectives in Fluid Mechanics; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Gas-Solid Flows: Dedicated to the Memory of Professor Clayton T. Crowe; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes ◽

10.1115/fedsm2014-21968 ◽

2014 ◽

Cited By ~ 1

Author(s):

Petar Liovic

Keyword(s):

Volume Of Fluid ◽

Planar Interface ◽

Interface Tracking ◽

Reconstruction Method ◽

Interfacial Flow ◽

Subgrid Scale ◽

Order Accuracy ◽

Interface Reconstruction ◽

Interface Curvature ◽

3D Volume

A new interface reconstruction method for Volume of Fluid (VOF) interface tracking is presented here, based on subgrid-scale planar interface segment reconstruction (SGS-PISR). In the SGS-PISR method implemented here, the centroid of the initial single-surface interface reconstruction is shifted along that normal to enclose the correct volume. An additional step then moves the SGS plane segments laterally outwards, to ameliorate the SGS curvature by blunting the protrusion of the centroid. The SGS-PISR method results in promising tendency towards second-order accuracy and more importantly reduced interface reconstruction errors across a range of mesh resolutions, and is targeted at improving VOF performance in resolving small grid-scale details of the interface topologies in interfacial flow CFD computations.

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Effect of dynamic contact angle in a volume of fluid (VOF) model for a microfluidic capillary flow

Journal of Colloid and Interface Science ◽

10.1016/j.jcis.2009.07.071 ◽

2009 ◽

Vol 339 (2) ◽

pp. 461-480 ◽

Cited By ~ 90

Author(s):

Auro Ashish Saha ◽

Sushanta K. Mitra

Keyword(s):

Contact Angle ◽

Capillary Flow ◽

Dynamic Contact Angle ◽

Dynamic Contact ◽

Volume Of Fluid ◽

Vof Model

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A NUMERICAL STUDY ON THE UNDERWATER APPARENT CONTACT ANGLE OF OIL DROPLETS ON MICROSTRUCTURE SURFACE

Surface Review and Letters ◽

10.1142/s0218625x19500951 ◽

2019 ◽

Vol 27 (01) ◽

pp. 1950095 ◽

Cited By ~ 1

Author(s):

HYONCHOL CHOE ◽

SONGHAK KIM ◽

CHOLHUAN O ◽

JISONG ZONG ◽

WONCHOL SONG

Keyword(s):

Contact Angle ◽

Numerical Simulations ◽

Numerical Study ◽

Volume Of Fluid ◽

Contact Angles ◽

Apparent Contact Angle ◽

Oil Droplets ◽

Oil Droplet ◽

Vof Model ◽

Baxter Model

In this study, the apparent contact angles of oil droplets on the rough surfaces in water were numerically studied using the Volume of Fluid (VOF) model. The results showed that the roughness of the surface affected the wettability. By increasing the roughness of the surface, the oleophilicity of the oleophilic surface and the oleophobicity of the oleophobic surface could be increased. Furthermore, the applicability and limitations of the prediction of the underwater apparent contact angle of the oil droplet by the contact angle model were investigated by 3D numerical simulations. It suggests that Wenzel model can accurately predict the underwater apparent contact angle of oil droplets on all the oleophilic, neutral and oleophobic surfaces, and Cassie model can only be applied to the oleophobic surface and Cassie–Baxter model can only be applied to the oleophilic surface.

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Effect of Electrode Shape on Droplet Actuation in Electrowetting-Based Microfluidics

Volume 13: Nano-Manufacturing Technology; and Micro and Nano Systems, Parts A and B ◽

10.1115/imece2008-68328 ◽

2008 ◽

Cited By ~ 1

Author(s):

Negar Rajabi ◽

Ali Dolatabadi

Keyword(s):

Contact Angle ◽

Electric Field ◽

Laplace Equation ◽

Volume Of Fluid ◽

Superior Performance ◽

Angle Distribution ◽

Phase Line ◽

Electrode Shape ◽

Three Phase ◽

Droplet Morphology

This article describes the effect of electrode shape in electrowetting-based droplet actuation. A Volume of Fluid technique is applied to track the 3-D interface. The Laplace equation is solved to predict the time and space dependent electric field in the domain. The onset of actuation, contact angle distribution at the three phase line, and the droplet morphology are studied for two electrode shapes; i.e. flat and crescent. The acceleration and the velocity of the droplet are also other important parameters to show the superior performance of crescent electrode in droplet actuation.

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Analytical and geometrical tools for 3D volume of fluid methods in general grids

Journal of Computational Physics ◽

10.1016/j.jcp.2008.03.010 ◽

2008 ◽

Vol 227 (12) ◽

pp. 5939-5948 ◽

Cited By ~ 44

Author(s):

J. López ◽

J. Hernández

Keyword(s):

Volume Of Fluid ◽

3D Volume

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1712: Predictive Value of 3D Volume Rendered CT for Collecting System Entry Prior to Nephron Sparing Surgery

The Journal of Urology ◽

10.1016/s0022-5347(18)35834-8 ◽

2005 ◽

Vol 173 (4S) ◽

pp. 464-464

Author(s):

Ithaar H. Derweesh ◽

Gaspar A. Motta-Ramirez ◽

Mahesh Gael ◽

Nancy Obuchowski ◽

Hazem A. Moneim ◽

...

Keyword(s):

Predictive Value ◽

Nephron Sparing Surgery ◽

Nephron Sparing ◽

3D Volume ◽

Collecting System

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The Effects of Direction and Velocity of Movement, and Intra-Articular Fluid Volume on Intra-Articular Pressue

Veterinary and Comparative Orthopaedics and Traumatology ◽

10.1055/s-0038-1633176 ◽

1988 ◽

Vol 01 (03/04) ◽

pp. 113-121 ◽

Cited By ~ 2

Author(s):

S. F. Straface ◽

P. J. Newbold ◽

S. Nade

Keyword(s):

Dynamic Pressure ◽

Volume Of Fluid ◽

Joint Capsule ◽

Fluid Volume ◽

Structural Configuration

levels. In joints with simulated acute effusion the effect of position on IAP was dependent upon the volume of fluid in the joint. The results indicate that dynamic pressure levels in the moving knee are related to the movements of the joint. The characteristic and reproducible patterns of pressure may reflect changes in the structural configuration of the joint capsule and surrounding tissues during movement, and are influenced by the amount of fluid in the joint.

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