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ISSN: 0276-1459 Print
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DOI: 10.1615/MultScienTechn.v21.i1-2
Pages: 185
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DOI: 10.1615/MultScienTechn.v21.i1-2.110
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Article price - $45.00 |
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HYBRID MULTIPHASE-FLOW SIMULATION OF BUBBLE-DRIVEN FLOW IN COMPLEX GEOMETRY USING AN IMMERSED BOUNDARY APPROACH
Masahiro Tanaka
Graduate School of Engineering, Kobe University, Rokkodai, Nada, Kobe 657, Japan
Kosuke Hayashi
Graduate School of Science and Technology, Kobe University, Kobe, Japan
Akio Tomiyama
Graduate School of Science and Technology, Department of Mechanical Engineering, Faculty of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan
ABSTRACT
The purpose of this study is to develop a practical numerical method for predicting multiphase flows in industrial systems of large scale. The practical method should be equipped with two functions. One is the ability of dealing with complex geometry of a given practical system without time-consuming grid generation procedures. The other is to simulate flows in large complex systems without using a high number of computational cells. Therefore, a numerical method based on the combination of a multifluid and interface tracking method and an immersed boundary method is proposed in this study. The hybrid combination of the multifluid and interface tracking methods enables us to simulate multiphase flows with various scales and various phases, and the immersed boundary method makes it possible to satisfy the two requirements. Several numerical simulations are carried out to demonstrate the potential of the proposed method. Comparisons between measured and predicted bubbly flows around single obstacles prove that the proposed method gives reasonable predictions for the interaction between bubbly flow and structures. Simulation of a bubble column with complex structure demonstrates its applicability to large industrial systems.
REFERENCES
Ferziger, J. H. and Peric, M., Computational Methods for Fluid Dynamics. Fujimoto, K., Murai, Y., Minami, T., and Yamamoto, F., Image Measurement of Two-Phase Convection Induced by Obstacles in Bubbly Flows. Iaccarino, G., Immersed Boundary Technique for Turbulent Flow Simulations. DOI: 10.1115/1.1563627 Mohd-Yusof, J., Combined Immersed-Boundary/B-Spline Methods for Simulations of Flow in Complex Geometries. Peskin, C. S., Numerical Analysis of Blood Flow in the Heart. DOI: 10.1016/0021-9991(77)90100-0 Sato, Y. and Sekoguchi, K., Liquid Velocity Distribution in Two-Phase Bubble Flow. Tomiyama, A. and Shimada N., (N+2)-Field Modeling for Bubbly Flow Simulation. DOI: 10.1016/0301-9322(75)90030-0 Tomiyama, A., Kataoka, I., and Sakaguchi, T., Drag Coefficients of Bubbles. Tomiyama, A., Zun, I., Tamaki, H., Hosokawa, S., and Okuda, T., Measurement of Transverse Migration of Single Bubbles in a Couette Flow. Ferziger, J. H. and Peric, M., Computational Methods for Fluid Dynamics. Fujimoto, K., Murai, Y., Minami, T., and Yamamoto, F., Image Measurement of Two-Phase Convection Induced by Obstacles in Bubbly Flows. Iaccarino, G., Immersed Boundary Technique for Turbulent Flow Simulations. DOI: 10.1115/1.1563627 Mohd-Yusof, J., Combined Immersed-Boundary/B-Spline Methods for Simulations of Flow in Complex Geometries. Peskin, C. S., Numerical Analysis of Blood Flow in the Heart. DOI: 10.1016/0021-9991(77)90100-0 Sato, Y. and Sekoguchi, K., Liquid Velocity Distribution in Two-Phase Bubble Flow. Tomiyama, A. and Shimada N., (N+2)-Field Modeling for Bubbly Flow Simulation. DOI: 10.1016/0301-9322(75)90030-0 Tomiyama, A., Kataoka, I., and Sakaguchi, T., Drag Coefficients of Bubbles. Tomiyama, A., Zun, I., Tamaki, H., Hosokawa, S., and Okuda, T., Measurement of Transverse Migration of Single Bubbles in a Couette Flow.
pages 141-155
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