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| Full Citation |
| Material Information |
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Title: |
13.4.4 - Direct Numerical Simulation of Turbulent Two-Phase Bubbly Channel Flow Computational Techniques for Multiphase Flows |
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Series Title: |
7th International Conference on Multiphase Flow - ICMF 2010 Proceedings |
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Physical Description: |
Conference Papers |
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Creator: |
Bolotnov, I.A.
Jansen, K.E.
Drew, D.A.
Oberai, A.A.
Lahey Jr., R.T.
Podowski, M.Z. |
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Publisher: |
International Conference on Multiphase Flow (ICMF) |
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Publication Date: |
June 4, 2010 |
| Subjects |
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Subject: |
two-phase bubbly flows
DNS |
| Notes |
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Abstract: |
Detached Direct Numerical Simulations (DDNS) of a two-phase turbulent bubbly channel flow at Reη = 180 (based on friction
velocity and channel half-width) were performed using a stabilized finite element method (FEM), a level set algorithm to track
the interface, and subgrid wall models. Fully developed turbulent single-phase DNS results obtained previously (Trofimova et
al., 2009) with the same stabilized FEM code, were used as the initial flow field, and a level-set distance field was introduced
to resolve and track the gas bubbles. Surface tension and gravity forces were used in the simulation to physically represent the
behavior of a bubbly two-phase air/water flow. The DDNS results were averaged to obtain the mean liquid and gas velocity
distributions, the local gas volume fractions, and the local turbulent kinetic energy and dissipation rate of the liquid phase. The
liquid phase parameters were compared with the corresponding single-phase turbulent channel flow to appraise the bubbles’
influence on the liquid’s turbulence field and to quantify the importance of bubble-induced turbulence. |
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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 |
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Bibliographic ID: |
UF00102023 |
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Volume ID: |
VID00329 |
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Source Institution: |
University of Florida |
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Holding Location: |
University of Florida |
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Rights Management: |
All rights reserved by the source institution and holding location. |
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Resource Identifier: |
1344-Bolotnov-ICMF2010.pdf |
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