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首页> 外文期刊>ISIJ international >Numerical Simulation of Coexisting Solid-liquid Slag Trickle Flow in a Coke Bed by the SPH Method with a Non-Newtonian Fluid Model
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Numerical Simulation of Coexisting Solid-liquid Slag Trickle Flow in a Coke Bed by the SPH Method with a Non-Newtonian Fluid Model

机译：用非牛顿流体模型的SPH法在焦床中共存固液炉渣流动的数值模拟

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摘要

A simulation of the dripping behavior of solid-phase suspended molten slag in a coke bed was performed using the Bingham fluid model in the framework of smoothed particle hydrodynamics (SPH). SPH can track the motion of droplets which are suspended in dispersed solids. A case study was performed in which the yield coefficient varied with the viscosity coefficient of the molten SiO_2-CaO-Al_2O_3 slag, with suspended solids approximated by the Bingham fluid model, and the holdup droplets were trapped at approximately the same site regardless of the yield value. When the yield value exceeded the threshold, the volume of each holdup droplet increased. This threshold is correlated with the decrease in the shear rate at the bottleneck. Increasing the solid phase ratio in the molten slag is also predicted to increase the yield value with viscosity; thus, the amount of holdup droplets increases at the specific holdup sites as a dispersed phase. This indicates that the increase in the yield value approaches the powder holdup mechanism that is closed one after another starting from a specific holdup site.
机译：使用弯曲颗粒流体动力学（SPH）框架中的宾厄姆流体模型进行焦炭床中固相悬浮熔渣的滴落行为的模拟。 SPH可以跟踪液滴的运动，该运动悬浮在分散的固体中。进行案例研究，其中熔融SiO_2-CaO-Al_2O_3渣的粘度系数变化，悬浮固体近似由宾厄姆流体模型的悬浮固体，并且无论收率如何，剩下的液滴都被捕获价值。当屈服值超过阈值时，每个保持液滴的体积增加。该阈值与瓶颈的剪切速率的降低相关。还预测熔融渣中的固相比增加，以增加粘度的屈服值;因此，作为分散阶段的特定保持位点在特定的保持位点增加。这表明屈服值的增加接近粉末保持机制，该机制在特定的Holdup站点开始之后闭合。

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  • 来源
    《ISIJ international》 |2020年第7期|1445-1452|共8页
  • 作者

    Shungo NATSUI; Akinori SAWADA; Hiroshi NOGAMI; Tatsuya KIKUCHI; Ryosuke O. SUZUKI;

  • 作者单位

    Division of Materials Science and Engineering Faculty of Engineering Hokkaido University. Now at Institute of Multidisci-plinary Research for Advanced Materials Tohoku University Katahira 2-1-1 Aoba-ku Sendai 980-8577 Japan;

    Division of Materials Science and Engineering Faculty of Engineering Hokkaido University. Now at Kurami Works JX Nippon Mining & Metals Co. Ltd. Kurami 3 Koza-gun Samukawa-machi Kanagawa 253-0101 Japan;

    Institute of Multidisciplinary Research for Advanced Materials Tohoku University Katahira 2-1-1 Aoba-ku Sendai 980-8577 Japan;

    Division of Materials Science and Engineering Faculty of Engineering Hokkaido University Kita 13 Nishi 8 Kita-ku Sapporo 060-8628 Japan;

    Division of Materials Science and Engineering Faculty of Engineering Hokkaido University Kita 13 Nishi 8 Kita-ku Sapporo 060-8628 Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ironmaking blast furnace; coke bed; trickle flow; molten slag; static holdup; Bingham plastic fluid;

    机译：熨烫高炉;焦床;涓流流;熔渣;静态持有;宾厄姆塑料液;

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