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- Chen Jizhong
- Institute for Advanced Materials Processing, Tohoku University
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- Akiyama Tomohiro
- Institute for Advanced Materials Processing, Tohoku University
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- Nogami Hiroshi
- Institute for Advanced Materials Processing, Tohoku University
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- Yagi Jun-ichiro
- Institute for Advanced Materials Processing, Tohoku University
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- Takahashi Hiroshi
- Department of Mechanical Systems Engineering, Muroran Institute of Technology
抄録
Solid descending flow due to gravity is frequently applied to industrial processes. Several kinds of models have been proposed like the plug flow model, the potential flow model, the kinematic model, etc. In this study, a viscous flow model based on the Navier-Stokes equation has been developed and was compared with the potential flow and the kinematic models. Both two and three dimensional experimental apparatuses have been constructed to observe the velocity fields.<br>The concept of solid viscosity was quoted to describe the friction between particles and the value was obtained from the experimental data. Slip boundary condition was used at the wall and the friction between particles and the wall or the dead zone was expressed by the Fanning equation.<br>Navier-Stokes equation was applied to simulate the solid flow. The good agreement between the observed and computed results was obtained in different scale apparatuses at different solid descending velocities. The computation results gave about 0.07 Pa·s as the solid viscosity of sand particles with the diameter of 0.001-0.002 m. The solid-gas countercurrent flow was also simulated by the Navier-Stokes equation with the same value of solid viscosity.
収録刊行物
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- ISIJ International
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ISIJ International 33 (6), 664-671, 1993
一般社団法人 日本鉄鋼協会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390001206453213440
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- NII論文ID
- 130000781750
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- COI
- 1:CAS:528:DyaK2cXhtl2rurs%3D
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- ISSN
- 13475460
- 09151559
- http://id.crossref.org/issn/09151559
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可