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Accession number;05A0248803
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| Title;Simulations of discrete particles in forming particle clusters in two-phase flow of solid and vapor phases. |
| Author;
TANAKA TOSHITSUGU
(Osaka Univ., Graduate School of Engineering, JPN)
AKIYAMA TSUYOSHI
(Osaka Univ., Graduate School of Engineering, JPN)
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Journal Title;Current Advances in Materials and Processes
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Journal Code:X0994A
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ISSN:0914-6628
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VOL.18;NO.1;PAGE.62-65(2005)
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| Figure&Table&Reference;FIG.8, TBL.1, REF.5 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;This is a part of the numerical simulation estimation research on flow structure of solid and vapor two-phase flows including particle clusters and particle cluster flow. 3D flow numerical simulations are conducted to dilute particle concentration dispersed type solid and vapor two-phase flows. Effects of changes of particle size on the space scale of the particle cluster and the disturbance on fluid and particle rate are investigated, and the results obtained are compared with observation results of particle cluster structure by experiments. The two-way coupling is employed for the combination of the particle flow dynamics computations. The basic equation of the fluid dynamics employs the following equations of the conservation of the mass and the conservation of moments. Effects of the changes of grain diameters on the flows containing particle clusters are investigated for the formation of the particle clusters, fluid and particle slip speed, and the structure of the particle clusters based on the sedimentation experiments of particles in a vertical duct and numerical analysis results. The analyses reveal that the increases of the particle size increase the time for particle formation. |
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