A Two-Fluid Turbulence Model for Gas-Solid Two-Phase Flows.
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- Wang Yunliang
- Department of Chemical Engineering, Kyushu University
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- Komori Satoru
- Department of Chemical Engineering, Kyushu University
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- Chung Myung Kyoon
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology
Bibliographic Information
- Other Title
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- Two-Fluid Turbulence Model for Gas-Soli
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Abstract
On the basis of a two-equation turbulence model of single-phase flows, two-fluid turbulence models, namely, the k–ε–kp–εp model and the k–ε–kp model are developed to describe turbulent gas-solid two-phase flows. Governing equations for the turbulent kinetic energy and the kinetic energy dissipation rate of the particulate phase are derived from their momentum equations, and unknown terms at two-equation closure level are modeled. The developed models show that the turbulence intensity of the particulate phase is often larger than that of the gaseous phase in the gas-solid flow in a 90° bend, which is quite in accordance with the experimental results. The conventional k–ε–Ap model using a k–ε turbulence model for the carrier fluid and Tchen-Hinze’s formula for the eddy viscosity of the particulate phase, however, shows that the particulate turbulence intensity is always smaller than that of the gaseous phase. Therefore, the two-phase turbulence models developed here are superior to the conventional turbulence model. The turbulence models are also applied to predict the effect of particles on gaseous phase turbulence in the gas-solid flow in a vertical pipe. The predicted results are favorably compared with the available experimental data.
Journal
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- JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
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JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 30 (3), 526-534, 1997
The Society of Chemical Engineers, Japan
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Details 詳細情報について
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- CRID
- 1390001204567128064
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- NII Article ID
- 130000020847
- 10002063221
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- NII Book ID
- AA00709658
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- COI
- 1:CAS:528:DyaK2sXktF2kt7w%3D
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- ISSN
- 18811299
- 00219592
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- NDL BIB ID
- 4240274
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed