Detailed modeling of melt dripping in coke bed by DEM - SPH

Shungo Natsui, Ko-Ichiro Ohno, Sohei Sukenaga, Tatsuya Kikuchi, Ryosuke O. Suzuki

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)

抄録

A high-resolution numerical model was performed for a detailed understanding of packed-bed structures constructed by actual scale cokes, and the molten slag (SiO2-CaO-Al2O3) trickle flow characteristics in the lower part of an actual blast furnace. Smoothed particle hydrodynamics (SPH) simulations can track the motion of liquids containing dispersed droplets, and the discrete element method (DEM) with a multisphere approach makes possible to simulate non-spherical solid-particle motion. We carried out highresolution large-scale trickle flow simulations using more than 10 million particles, carried out case studies of statistical processing, and evaluated the effects of physical properties varied by the composition or temperature of slag samples. We clarified that there is a limitation to predict the holdup accurately based on the capillary number, which is a widely used approach. We analyzed the influence of melt viscosity on trickle flow, and clarified that an increase in viscosity increases holdup because limiting the effective flow path and suppressing the dispersion of the droplets promoted the enlargement of each stagnant droplet. This detailed direct dynamic model could explain the mechanism underlying different holdup tendencies in conventional research.

元の言語英語
ページ(範囲)282-291
ページ数10
ジャーナルisij international
58
発行部数2
DOI
出版物ステータス出版済み - 1 1 2018

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Finite difference method
Coke
Hydrodynamics
Slags
Viscosity
Flow simulation
Packed beds
Blast furnaces
Molten materials
Numerical models
Dynamic models
Physical properties
Liquids
Processing
Chemical analysis
Temperature

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

これを引用

Detailed modeling of melt dripping in coke bed by DEM - SPH. / Natsui, Shungo; Ohno, Ko-Ichiro; Sukenaga, Sohei; Kikuchi, Tatsuya; Suzuki, Ryosuke O.

:: isij international, 巻 58, 番号 2, 01.01.2018, p. 282-291.

研究成果: ジャーナルへの寄稿記事

Natsui, Shungo ; Ohno, Ko-Ichiro ; Sukenaga, Sohei ; Kikuchi, Tatsuya ; Suzuki, Ryosuke O. / Detailed modeling of melt dripping in coke bed by DEM - SPH. :: isij international. 2018 ; 巻 58, 番号 2. pp. 282-291.
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