DISCRETE PARTICLE SIMULATION OF 2-DIMENSIONAL FLUIDIZED-BED
DISCRETE PARTICLE SIMULATION OF 2-DIMENSIONAL FLUIDIZED-BED
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DOI：
10.1016/0032-5910(93)85010-7
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发表时间：
1993-10-01
影响因子：
5.2
通讯作者：
TANAKA, T
中科院分区：
文献类型：
--
作者：
TSUJI, Y;KAWAGUCHI, T;TANAKA, T
对二维气体流化床进行了数值模拟，计算了单个颗粒的运动。颗粒间的接触力采用昆达尔的离散单元法（P.A.昆达尔和O.D.L. Strack，Geotechnique，29（1979）47），其使用弹簧、阻尼器和摩擦滑块来表示力。假设气体为无粘流体，考虑颗粒与气体之间的相互作用，将其流动与颗粒的运动同时求解。模拟给出了粒子运动的真实图像。气泡和段塞的形成以及颗粒混合的过程被观察到以与实验中相同的方式发生。计算出的压力波动与测量值进行了比较。
Numerical simulation, in which the motion of individual particles was calculated, was performed of a two-dimensional gas-fluidized bed. Contact forces between particles are modeled by Cundall's Distinct Element Method (P.A. Cundall and O.D.L. Strack, Geotechnique, 29 (1979) 47), which expresses the forces with the use of a spring, dash-pot and friction slider. The gas was assumed to be inviscid and its flow was solved simultaneously with the motion of particles, taking into account the interaction between particles and gas. The simulation gives realistic pictures of particle motion. Formation of bubbles and slugs and the process of particle mixing were observed to occur in the same way as in experiments. The calculated pressure fluctuations compared well with measurements.