高校化学工程学报2017，Vol.31Issue(3)：539-546,8.DOI:10.3969/j.issn.1003-9015.2017.00.018
基于流固耦合理论的螺旋折流板换热器结构优化研究
Structural Optimization of Shell-Tube Heat Exchanger with Helical Baffles Based on Fluid-Structure Interaction
摘要
Abstract
Helical angle and baffle overlap proportion as two variables were used in structural optimization of shell-tube heat exchanger with helical baffles,and a second polynomial regression response surface method combined with genetic algorithm was applied. The study was based on fluid-structure interaction theory considering thermal structural performance. The results show that the heat transfer coefficient per pressure drop increases first and then decreases with the increase of helical angle, and it decreases with the increase of baffle overlap proportion when flow velocityν= 1.5 m·s-1. Helical angle is more sensitive than baffle overlap proportion for flow and heat transfer. The maximum shear stress increases with the increase of helical angle, but it is almost unaffected by baffle overlap proportion. The optimization objectives are maximization of heat transfer coefficient per pressure drop and minimization of maximum shear stress within allowable stress ranges, and three optimal structures are obtained. The optimal results show that the heat exchanger coefficient per pressure drop is increased by 14.1% on average and the maximum shear stress is reduced by 4.1% on average. These results provide theoretical guidance for industrial design of shell-tube heat exchanger with helical baffles.关键词
螺旋折流板换热器/流固耦合/遗传算法/结构优化Key words
shell-tube heat exchanger with helical baffles/fluid-structure interaction/genetic algorithm/structural optimization分类
能源科技引用本文复制引用
王斯民,肖娟,王家瑞,简冠平,顾昕,文键..基于流固耦合理论的螺旋折流板换热器结构优化研究[J].高校化学工程学报,2017,31(3):539-546,8.基金项目
国家自然科学基金(51676146). （51676146）
