化工学报2017，Vol.68Issue(12)：4556-4564,9.DOI:10.11949/j.issn.0438-1157.20170632
穿流-刚柔组合桨强化固液两相的悬浮行为
Solid-liquid suspension behavior intensified by punched rigid-flexible impeller
摘要
Abstract
The total deformation and equivalent stress of impeller, and hydrodynamics of solid-liquid suspension process in a stirred tank with RDT-PBDT, R-RDT-PBDT, RF-RDT-PBDT, PR-RDT-PBDT and PRF-RDT-PBDT were investigated using bidirectional fluid-structure interaction (FSI) method. Results showed that, at the same power consumption, the total deformation of PRF-RDT-PBDT was 1.984×106, 1.247×103, 1.169, 1.041×103 times of RDT-PBDT, R-RDT-PBDT, RF-RDT-PBDT and PR-RDT-PBDT, respectively. The equivalent stress of PRF-RDT-PBDT was larger than that of RDT-PBDT, R-RDT-PBDT and RF-RDT-PBDT, and was more homogeneous than that of PR-RDT-PBDT. The maximum Uz/Utip value of solid particle and maximum ε/D2N3 value in PRF-RDT-PBDT system were 53.08％ and 80.84％,38.03％ and 28.42％,22.14％ and 20.16％,10.85％and 5.725％, which are higher compared with RDT-PBDT, R-RDT-PBDT, RF-RDT-PBDT, PR-RDT-PBDT, respectively. Therefore, PRF-RDT-PBDT can enhance mutual coupling effect with fluid, increase axial velocity of solid particles and turbulent energy dissipation rate, reduce the accumulation of solid particles at the bottom of stirring tank, and improve the solid-liquid mixing performance.关键词
流固耦合/搅拌/PRF-RDT-PBDT/固液两相/悬浮Key words
fluid-structure interaction/stirring/PRF-RDT-PBDT/solid-liquid two-phase/suspension分类
化学化工引用本文复制引用
谷德银,刘作华,邱发成,许传林,谢昭明,李军,陶长元,王运东..穿流-刚柔组合桨强化固液两相的悬浮行为[J].化工学报,2017,68(12):4556-4564,9.基金项目
国家自然科学基金项目(21576033, 21636004) （21576033, 21636004）
中央高校基本科研业务费专项资金(106112017CDJQJ228808) （106112017CDJQJ228808）
重庆市社会事业与民生保障科技创新专项(cstc2015shmszx100024). supported by the National Natural Science Foundation of China (21576033, 21636004), the Fundamental Research Funds for the Central Universities (106112017CDJQJ228808) and the Chongqing Special Social Undertakings and People's Livelihood Security Science and Technology Innovation (cstc2015shmszx100024). （cstc2015shmszx100024）
