基于CFD模拟与数学规划法的熔融聚合物流动管道设计优化
Design and optimization of molten polymer flow pipelines based on CFD simulation and mathematical programming
唐杰 1董亚超 1张磊 1孟庆伟 1都健 1曾世军 2倪岩 2石昊2
作者信息
- 1. 大连理工大学 化工学院,辽宁 大连 116024
- 2. 大连华阳百科科技有限公司,辽宁 大连 116041
- 折叠
摘要
在满足产能和合理的管道压降范围下,如何降低熔融聚合物在熔体管道中黏度降问题是熔体流动管道设计的关键因素.本研究基于计算流体力学(CFD)的方法,对熔体流经管道发生热降解过程进行数值模拟,并在此基础上提出了混合整数非线性规划(MINLP)模型和非连续性非线性规划(DNLP)模型,分别对熔体管道进行设计与布局优化.分析实际算例的数值模拟结果发现,优化后的管道相较于原管道黏度降减小 3.48%,同时出口的压降分布范围减小了60.47%,出口的压降分布更加均匀.结果表明,综合利用模拟方法与数学规划模型可实现熔融聚合物流动管道的自动化设计及优化.
Abstract
Reduction viscosity drop of molten polymer in melt pipelines while meeting the production capacity and reasonable pipeline pressure drop is a key factor in the design of melt flow pipelines.This study was based on computational fluid dynamics(CFD)method to numerically simulate the thermal degradation process of melt flowing through the pipeline.Based on the simulation results,a mixed integer nonlinear programming(MINLP)model and a discontinuous nonlinear programming(DNLP)model were proposed to optimize the design and layout of the pipeline,respectively.The results show that the viscosity drop of the optimized pipeline is reduced by 3.48%compared with the original pipeline by analyzing the numerical simulation results of real cases,while the pressure drop distribution range at the outlet is reduced by 60.47%,and the pressure drop distribution at the outlet is more uniform.This result indicates that the automated design and optimization of molten polymer flow pipelines can be achieved by utilization and integration of simulation methods and mathematical programming models.
关键词
熔体管道/计算流体力学/数值模拟/数学规划/设计/优化Key words
melt pipeline/computational fluid dynamics/numerical simulation/mathematical programming/design/optimization引用本文复制引用
基金项目
辽宁省科技厅"揭榜挂帅"科技攻关项目(2021JH1/10400075)
出版年
2024
国家科技期刊平台
NSTL
万方数据