Group Title: 7th International Conference on Multiphase Flow - ICMF 2010 Proceedings
Title: 1.1.1 - Non-Barotropic Models of Cavitation and Their Applications
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Permanent Link: http://ufdc.ufl.edu/UF00102023/00015
 Material Information
Title: 1.1.1 - Non-Barotropic Models of Cavitation and Their Applications Cavitation
Series Title: 7th International Conference on Multiphase Flow - ICMF 2010 Proceedings
Physical Description: Conference Papers
Creator: Delale, C.F.
Baskaya, Z.
Schmid, S.J.
Publisher: International Conference on Multiphase Flow (ICMF)
Publication Date: June 4, 2010
 Subjects
Subject: on-barotropic cavitation models
transport equations of vorticity and dilation
equilibrium phase transition
 Notes
Abstract: The bubbly flow model and an equilibrium phase transition model of a homogeneous two-phase mixture are considered as non-barotropic models for cavitating flows. For simplicity, in both models two-dimensional unsteady cavitating flows in converging-diverging nozzles are considered. In the bubbly flow model, which couples the Euler equations of motion to spherical bubble dynamics, by scale separation evolution equations are obtained for the bubble radius and for the flow velocity, the latter being determined by an integro-partial differential system for the unsteady acceleration which constitutes the transport equations for the dilation and vorticity. The initial and boundary value problem of the evolution equations is then discussed for cavitating flows in nozzles and a numerical method to integrate the equations is introduced. The mixture pressure, density and void fraction are then universally (independent of flow dimensionality) related to the solution of the evolution system. In the non-barotropic equilibrium phase transition model (CATUM), the two-phase flow properties are defined by their mixture quantities given by the internal energy, the density and the velocity of the mixture. These properties, in accordance with the homogeneous bubbly flow model, are coupled to the Euler equations for the mixture. Results for a typical cavitation cycle obtained by CATUM show high pressure pulses at instances of bubble cloud collapse.
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: VID00015
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: 111-Delale-ICMF2010.pdf

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