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A study of the dynamic behaviour of individual particles in a gas fluidized bed

机译：气体流化床中单个颗粒动力学行为的研究

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The dynamic behavior of individual particles in a gas-fluidized bed is obtained numerically by a combined approach of discrete particle method and computational fluid dynamics. It shows that the inter-particle contact forces change dramatically during the time evolution as a direct consequence of the strong gas-solid interaction. The magnitude of contact force is much higher than that of fluid drag force in terms of maxima and its occurrence is found to be not necessarily in the region where gas velocity is high.

机译：通过离散颗粒法和计算流体力学的组合方法，数值获得了气化床中单个颗粒的动力学行为。它表明，由于强烈的气固相互作用，颗粒间的接触力在时间演化过程中发生了巨大变化。就最大值而言，接触力的大小远高于流体阻力的大小，并且发现它的发生不一定在气体速度高的区域中。

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来源
《Fluidization IX》|1998年|p.461-468|共8页
会议地点 Durango CO(US)
作者
B. H. Xu; A. B. Yu;
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原文格式 PDF
正文语种 eng
中图分类化学工业;
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2. Experimental study on fluidisation behaviour and pressure drop across the centrifugal fluidised bed with static geometry by varying inlets, inlet width and mass of bed particles [J] . Sonal Shamkuwar, Dileep Malkhede International journal of ambient energy . 2020,第1a7期

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3. Visual observations of individual particle behaviour in gas and liquid fluidized beds [J] . G.P. Hartholt, A.C. Hoffmann, L.P.B.M. Janssen Powder Technology . 1996,第3期

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4. Numerical studies of the dynamics of gas-fluidized beds comprised of non-spherical particles using the DEM-CFD [C] . G. Lu, J.R. Third, C.R. Mueller International conference on fluidization . 2013

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5. Investigation of instantaneous hydrodynamics and heat transfer to a horizontal tube immersed in a high-temperature gas-solid fluidized bed of large particles. [D] . Burr, Marlene Mainland. 1998

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8. Sulfur Capture during Fluidized Bed Combustion of Coal. External Mass Transfer Phenomena and the Fluid-Dynamical Behaviour of Large Particles [R] . Noordergraaf, I. W. 1985

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A study of the dynamic behaviour of individual particles in a gas fluidized bed

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