论文部分内容阅读
该文研究一种带流槽侧壁卸料筒仓,该筒仓具有缓解动态超压、基本实现分层有序自动卸料、节约能源等优点。利用PFC~(3D)建立与试验条件相同的三维颗粒流数值模型,模拟静、动态侧压力的大小及分布规律,计算出动态超压系数,并与试验结果进行对比分析。结果表明:卸料口对侧仓壁动态压力较大;最大超压系数达1.4,在所考虑的三列测墙中共有3个位置达到此峰值,其中2个位置发生在卸料口对侧仓壁,而另一个位置发生在距卸料口成90°的仓壁。卸料口对侧仓壁出现2个峰值,一个在筒仓上部0.2 m处,而另一个在筒仓下部0.8 m处;模拟贮料流态和试验吻合较好。
In this paper, a side silo discharge silo with slot is studied. The silo has the advantages of relieving dynamic overpressure, basically realizing the automatic delamination layered and energy saving. The three-dimensional particle flow numerical model with the same experimental conditions was established by using PFC 3D to simulate the static and dynamic lateral pressure of the size and distribution of the dynamic pressure coefficient calculated and compared with the test results. The results show that the dynamic pressure of the wall on the opposite side of the discharge opening is large. The maximum overpressure coefficient reaches 1.4. Three peaks in the three walls under consideration reach this peak. Two of them occur on the opposite side of the discharge opening The silo wall, while the other position occurred at a 90 ° silo from the discharge opening. There were two peaks on the opposite side of the discharge opening, one at 0.2 m in the upper part of the silo and the other at 0.8 m in the lower part of the silo. The simulated storage flow pattern was in good agreement with the test.