基于流-固耦合理论的搅拌反应器机械特性

发布时间：2018-05-18 20:07

本文选题：搅拌反应器 + 流-固耦合　；参考：《济南大学学报(自然科学版)》2017年02期

【摘要】：采用欧拉模型与k-ε湍流模型,利用ANSYS软件中的Fluent模块分析反应器内部的流体特性,计算搅拌器的驱动扭矩与功率;应用流-固耦合理论,利用Static Structural模块计算搅拌轴及桨的应力与挠度。结果表明:单跨与悬臂约束方式的搅拌器内部流体特性一致,采用2种约束方式的搅拌轴及桨的应力最大值点位置相同,均在上层六直叶圆盘涡轮的桨叶与圆盘连接处,其中单跨、悬臂约束方式的搅拌轴及桨的最大应力值分别为22.37、26.44 MPa;采用单跨约束的主轴、搅拌桨应力最大值分别为悬臂约束的62%、84.6%;采用单跨约束的搅拌轴及桨的挠度最大值点在上层桨桨叶末梢,悬臂约束的在下层桨桨叶的末梢,其中单跨约束的搅拌轴及桨的变形量最大值为0.45 mm,悬臂约束的为1.67 mm;采用单跨约束的主轴、搅拌桨变形分别为悬臂约束的10.7%、26.9%。
[Abstract]:Using Euler model and k- 蔚 turbulence model, using Fluent module in ANSYS software to analyze the fluid characteristics of reactor, calculate the driving torque and power of agitator, apply the theory of fluid-solid coupling, The stress and deflection of stirring shaft and propeller are calculated by Static Structural module. The results show that the internal fluid characteristics of the agitator with single span and cantilever confinement are the same, and the maximum stress points of the agitator shaft and propeller with two kinds of restraint modes are the same, and they are all located at the connection between the blade and the disk of the upper six-blade disk turbine. The maximum stress values of single span, cantilever restraint shaft and propeller are 22.37 ~ 26.44 MPa respectively. The maximum stress of the impeller is 62um 84.6with cantilever constraint, the maximum deflection of the impeller with single span constraint is at the end of the upper propeller blade, and the tip of the lower propeller blade with cantilever constraint is at the end of the lower propeller blade, the maximum deflection of the impeller is at the end of the upper propeller blade. The maximum deformation of single-span impeller and agitator is 0.45 mm and that of cantilever is 1.67 mm, and that of single span restraint is 10.7% and 26.9mm, respectively.
【作者单位】：山东科技大学机械电子工程学院;
【基金】：国家自然科学基金项目(51375282) 山东省自然科学基金项目(2014ZRB01863)
【分类号】：TQ051.72

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