基于流场模拟的复杂形面搅拌桨叶三维设计与优化系统  

Three Dimensional Design and Optimization System for Stirring Blades with Complicated Surface by Flow Field Simulation

作　　者：易朋兴[1] 刘世元[1,2] 崔峰[3] 胡友民[1] 杜润生[1] 

机构地区：[1]华中科技大学数字制造装备与技术国家重点实验室,武汉430074 [2]武汉光电国家实验室光电材料与微纳制造研究部,武汉430074 [3]航天科工集团第九研究院江河化工厂,宜昌444200

出　　处：《宇航学报》2009年第1期321-326,共6页Journal of Astronautics

基　　金：国家自然科学基金(50575087;50775090);新世纪优秀人才支持计划项目(NCET-06-0639)

摘　　要：为实现立式捏合机搅拌桨叶全三维设计与优化,集成搅拌桨叶几何造型、流场模拟与机械性能分析,开发了基于流场模拟的复杂形面搅拌桨叶三维设计与优化系统。分析搅拌桨叶运动特性,建立搅拌桨叶的三维参数化模型;综合搅拌桨叶的几何造型、运动方式、混合工艺条件,在虚拟环境中真实地模拟搅拌桨叶混合过程,快速分析与评价搅拌桨叶几何形状与流场特征的关系;在虚拟环境下,将流场模拟结果作为负载,添加在搅拌桨叶上,对其机械性能进行分析与优化。通过工程设计实例,对这套方法进行验证,设计结果成功地应用于生产实践。应用结果表明这套系统可以缩短设计时间20%,设计的设备能耗降低5%。Integrating the stirring blade modeling system, flow field simulating system and mechanical property evaluating system, a three dimensional design and optimization system for stirring blades with complicated surface, which can be used to design the stirring blades of vertical kneading mixers, was proposed and developed. Three dimensional parametric models of stirring blades were established after analyzing their motion characteristics. To rapidly analyze and evaluate the relationship of the characteristics of flow field and the geometry of stirring blades, the actual mixing process was simulated in virtual environment by CFD methods with comprehensive consideration of geometric modeling and motion patterns of the stirring blades, operating conditions and characteristics of the mixture stirred by the blades. Mechanical properties of the stirring blades were analyzed in virtual environment when the data obtained by flow field simulation were loaded. This design and optimization procedure was illustrated by a case of application, and the design results were applied in engineering practice successfully. Compared to traditional design methods, the design cycle of stirring blades by the proposed system is reduced by 20% , the energy consumption of the designed vertical kneading mixers is decreased by 5 % .

关 键 词：搅拌桨叶 参数化造型 流场模拟 机械性能分析 优化 

分 类 号：TQ520[化学工程—煤化学工程] V512[航空宇航科学与技术—航空宇航推进理论与工程]