Numerical simulation of unsteady flow in stirred tank

被引：0

作者：

Hui, Chao ^{[1
]}

Xu, Juan ^{[1
]}

Liu, Tong ^{[2
]}

机构：

[1] Shandong Acad Sci, Inst Oceanog Instrumentat, Shandong Prov Key Lab Ocean Environm Monitoring T, Qingdao 266001, Peoples R China

[2] Qingdao Univ Sci & Technol, Qingdao, Peoples R China

来源：

PROCEEDINGS OF THE 3RD INTERNATIONAL CONFERENCE ON MECHANICAL ENGINEERING AND INTELLIGENT SYSTEMS (ICMEIS 2015) | 2015年 / 26卷

关键词：

ruston turbine; mixing; numerical simulation; unsteady flow;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The unsteady flowing property is complicated in stirred tank, so Computational Fluid Dynamics (CFD) is used to simulate the three - dimensional flow in this paper. Taking the steady-state solution as the initial condition of the large eddy simulation, flows in stirred tank are analyzed at different time. The results show that the flow of six-blade ruston turbine is well and velocity distribution is uniform which is good for back-mixing and is unlikely to generate the cavitation. The flow velocity near the blade is obviously higher than that far away from the blade which shows that with the longer distance from the blade, mixing effect is weaker. The low pressure flow characteristic appears in the area near the blade. After squeezed to this area, the high pressure flow is mixed in the blade. The blade whirls to drive the fluid around to form a large number of vortexes. The motion and development of these vortexes enhance the mixing between the materials and the liquid.

引用

页码：998 / 1001

页数：4