Group Title: 7th International Conference on Multiphase Flow - ICMF 2010 Proceedings
Title: 2.2.2 - Numerical simulation of drop-wall interaction: sliding and coalescence
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Title: 2.2.2 - Numerical simulation of drop-wall interaction: sliding and coalescence Particle Bubble and Drop Dynamics
Series Title: 7th International Conference on Multiphase Flow - ICMF 2010 Proceedings
Physical Description: Conference Papers
Creator: Maglio, M
Legendre, D.
Publisher: International Conference on Multiphase Flow (ICMF)
Publication Date: June 4, 2010
Subject: wetting
contact angle
Abstract: We consider numerical simulation of drop-wall interaction phenomena where wetting plays an important role. The numerical approach used is the Volume Of Fluid module in the JADIM code developed at IMFT. We take into account of the dynamic contact angle depending on the contact line normal Capillary number, and we have developed a strategy for simulating 3D hysteresis. We propose some results of 2D and 3D coalescence of drops on a wall. Simulations using a model for the dynamic contact angle are compared to simulations using a static contact angle. We show that the same power law in t0:5 is observed for the growing of the bridge created by the coalescence also when the contact angle hysteresis is involved. This law has been confirmed by experience on high and partial wetting surface (Menchacha-Rocha (2001) and Ristenpart (2006)). The final shape of the resulting drop is found to be controlled also by the hysteresis that can freeze the drop on an intermediate situation (Kapur & Gaskell (2007)). Furthermore we present the validation of our tool by three dimensional simulations of a drop sliding on a progressively inclined plane. We compare our results for different Eotvos number and hysteresis range with the theory for spray retention introduced by Furmidge (1962).
General Note: The International Conference on Multiphase Flow (ICMF) first was held in Tsukuba, Japan in 1991 and the second ICMF took place in Kyoto, Japan in 1995. During this conference, it was decided to establish an International Governing Board which oversees the major aspects of the conference and makes decisions about future conference locations. Due to the great importance of the field, it was furthermore decided to hold the conference every three years successively in Asia including Australia, Europe including Africa, Russia and the Near East and America. Hence, ICMF 1998 was held in Lyon, France, ICMF 2001 in New Orleans, USA, ICMF 2004 in Yokohama, Japan, and ICMF 2007 in Leipzig, Germany. ICMF-2010 is devoted to all aspects of Multiphase Flow. Researchers from all over the world gathered in order to introduce their recent advances in the field and thereby promote the exchange of new ideas, results and techniques. The conference is a key event in Multiphase Flow and supports the advancement of science in this very important field. The major research topics relevant for the conference are as follows: Bio-Fluid Dynamics; Boiling; Bubbly Flows; Cavitation; Colloidal and Suspension Dynamics; Collision, Agglomeration and Breakup; Computational Techniques for Multiphase Flows; Droplet Flows; Environmental and Geophysical Flows; Experimental Methods for Multiphase Flows; Fluidized and Circulating Fluidized Beds; Fluid Structure Interactions; Granular Media; Industrial Applications; Instabilities; Interfacial Flows; Micro and Nano-Scale Multiphase Flows; Microgravity in Two-Phase Flow; Multiphase Flows with Heat and Mass Transfer; Non-Newtonian Multiphase Flows; Particle-Laden Flows; Particle, Bubble and Drop Dynamics; Reactive Multiphase Flows
 Record Information
Bibliographic ID: UF00102023
Volume ID: VID00044
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: 222-Maglio-ICMF2010.pdf

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