抽吸
计算机模拟
机械
流量(数学)
过程(计算)
计算流体力学
混合(物理)
气泡
材料科学
机械工程
岩土工程
工程类
计算机科学
物理
量子力学
操作系统
作者
Shengqiang Jiang,Zehua He,Yupeng Zhou,Xin Xiao,Guodong Cao,Zhenggang Tong
标识
DOI:10.1016/j.powtec.2022.117787
摘要
In this paper, a numerical model of the suction process of the pumping system was established, and the accuracy of the numerical model was verified by the rheological experiment of fresh concrete and the suction experiment of the pumping system. By analyzing the numerical results, the distribution characteristics of the internal flow field of the hopper and the change law of the bubble shape in the fresh concrete during the suction process were explored. The results show that the established numerical model can effectively simulate the material suction process of the pumping system, and the flow velocity of the fresh concrete in the mixing area presents a periodic variation behavior. The simulation results show that there is a “flow dead zone” at the bottom of the hopper. Smaller flow speed of fresh concrete was found around the S valve, and the bubbles located inside the fresh concrete have a negative impact on the suction effect of the pumping system. The research results of this paper provide valuable references for designers to improve the hopper structure and optimize the operational parameter of the suction process of pumping system.
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