Numerical simulation of unsteady flow in stirred tank

DOI

10.2991/icmeis-15.2015.188How to use a DOI?

Keywords

ruston turbine; mixing; numerical simulation; unsteady flow

Abstract

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.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Chao Hui
AU  - Juan Xu
AU  - Tong Liu
PY  - 2015/08
DA  - 2015/08
TI  - Numerical simulation of unsteady flow in stirred tank
BT  - Proceedings of the 3rd International Conference on Mechanical Engineering and Intelligent Systems (ICMEIS 2015)
PB  - Atlantis Press
SP  - 998
EP  - 1001
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmeis-15.2015.188
DO  - 10.2991/icmeis-15.2015.188
ID  - Hui2015/08
ER  -