化工学报2017，Vol.68Issue(6)：2328-2335,8.DOI:10.11949/j.issn.0438-1157.20161651
基于流固耦合的错位桨搅拌假塑性流体动力学特性
Dynamic characteristics of impeller of perturbed six-bent-bladed turbine in pseudoplastic fluid based on fluid-structure interaction
摘要
Abstract
Dynamic characteristics ofimpeller of perturbed six-bent-bladed turbine (6PBT) and six-bent-bladed turbine (6BT) are analyzedcomparatively using bidirectional fluid-structure interaction (FSI) method based on simulation platform ANSYS Workbench. Macroscopic flow field structure and power consumption caused by the coupling action between the blade and fluid are studied, and the total deformation and equivalent stress distribution along the blade are also analyzed. Besides, the natural and prestressed mode of the 6PBT impeller are investigated comparatively. The results show that, compared with 6BT impeller, the tip deformation and stress of 6PBT impeller are increased by 8% and 61%, respectively, while its root stress is reduced by 6.7% with the well stress distribution of the blade along the radial direction, which indicates that the interaction force between 6PBT impeller and fluid is stronger, resulting in the faster energy dissipation, at the meantime, the blade strength is also improved. The vibration mode of 6PBT impeller under prestressed mode is consistent with that of natural mode, and the modal frequency has no significant changes on the prestressed action, which shows that the fluid-structure interaction and prestressed action have little influence on the blade mode. With the increasing speed, 6PBT impeller has an advantage with a better energy saving effect.关键词
假塑性流体/错位六弯叶桨/流固耦合/预应力模态分析Key words
pseudoplastic fluid/6PBT impeller/fluid-structure interaction/prestressed modal analysis分类
化学化工引用本文复制引用
栾德玉,张盛峰,郑深晓,魏星,王越..基于流固耦合的错位桨搅拌假塑性流体动力学特性[J].化工学报,2017,68(6):2328-2335,8.基金项目
山东省自然科学基金项目(ZR2014EEM017) （ZR2014EEM017）
山东省科技发展计划项目(2013YD09007).supported by the Natural Science Foundation of Shandong Province(ZR2014EEM017) and the Science and Technology Development Planning Program of Shandong Province(2013YD09007). （2013YD09007）
