Numerical Simulation of Material Movement in Discharging Device Based on Gas-solid Coupling Method

被引：0
|
作者：
Zhang F. [1 ]
Song X. [1 ]
Zhang X. [1 ]
Zhang F. [1 ]
Dai F. [1 ]
Sun B. [1 ]
机构：
[1] College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou
来源：
Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | 2019年 / 27卷 / 06期
关键词：
Coupling; Discharging; Material movement; Numerical simulation; Two-phase flow;
D O I：
10.16058/j.issn.1005-0930.2019.06.020
中图分类号：
学科分类号：
摘要：
To study the interaction between air and material in discharging device of 9FH-40 kneading machine at different rotation speeds, the interaction between air and material at different rotation speed (under the rated speed) was simulated with the gas-solid coupling method (Computational Fluid Dynamics & Discrete Element Method). The results shows that the turbulence intensity is highest in the fan rotation zone, and the material can be accelerated to 10m/s after entering this area. The air velocity and coupling force increased with the increasing of rotation speed in the fan rotation zone. Meanwhile, the volatility of air velocity and coupling force is strengthened. The air velocity reaches to 40m/s at the edge of the fan in the radial direction. The rotation speed of the fan has small effect to the coupling force at inlet zone, the coupling force maintains at 2.5×10-4N basically. The fluctuation of coupling force is greatly affected by fan rotation speed at outlet zone, and the distribution of coupling force in the same range under different rotation speeds. The corresponding suggestions aiming at the analysis results are proposed for improving the structure of the discharging device. © 2019, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.
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页码：1411 / 1419
页数：8
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