食品与机械2013，Vol.29Issue(3)：169-172,186,5.DOI:10.3969/j.issn.1003-5788.2013.03.041
立式三轴搅拌釜固—液悬浮特性的数值模拟
CFD simulation of solid-liquid suspension characteristics in vertical three-impeller stirred tank
赵丽君 1尹侠1
作者信息
- 1. 南京工业大学机械与动力工程学院,江苏南京 211816
- 折叠
摘要
Abstract
Based on standard k-ε turbulence model and multiple reference frame (MRF) method,the 3D numerical simulation for the mixing process of the single-phase and solid-liquid two-phase in stirred tank with triaxial agitator was made using FLUENT software.The results indicate that compared with the single-phase system,the adding of solid particles can suppress the axial height of the circulation flow and reduce the overall speed of liquid phase in the tank.The solid deposition area at bottom tank decreases with the increasing of rotor speed.Meanwhile,the solids just-suspended impeller speed Nis was 635 r/min which obtained by the Concentration Criterion.From the variation trend of the specific volume power increasing and mean solid concentration at bottom tank decreasing with the increase of the speed,it could be derived that the optimum speed which makes the solids just-suspended and the minimum consumed power is 640 r/min.关键词
立式三轴搅拌釜/固液两相/最佳转速/搅拌功率/计算流体力学(CFD)Key words
vertical three-impeller stirred tank/two-phase of solid-liquid/optimum speed/stirring power/computational fluid dynamics (CFD)引用本文复制引用
赵丽君,尹侠..立式三轴搅拌釜固—液悬浮特性的数值模拟[J].食品与机械,2013,29(3):169-172,186,5.
