轻工机械2024，Vol.42Issue(4)：50-55,6.DOI:10.3969/j.issn.1005-2895.2024.04.007
弓形折流板换热器流动与传热性能的数值模拟
Numerical Simulation of Flow and Heat Transfer Performance of Segmental Baffle Heat Exchanger
摘要
Abstract
In order to study the influence of the segmental baffle structure on the overall performance of shell and tube heat exchangers,FLUENT software was used to simulate and analyze the influence of two key variables of distance between segmental baffles and notch height ratio,and distribution of flow field and temperature field under different conditions was obtained.Taking the heat transfer coefficient h,pressure drop ΔP and comprehensive performance parameter η as heat transfer evaluation index,the influence of different structural parameters on heat transfer performance was studied,and the correlation between the two key variables was analyzed.The results show that the dead zone of flow and heat transfer becomes smaller and the heat transfer coefficient and shell side pressure drop increase with the decrease of distance between segmental baffles.The comprehensive performance of the heat exchangers with smaller distance between baffles is relatively better under the condition of low inlet velocity.The heat transfer coefficient and pressure drop decrease with the increase of the notch height ratio when the distance between segmental baffles is 185 mm,so the better comprehensive performance can be obtained by choosing the notch height ratio of 0.30.In addition,by studying the relationship between the two variables,it is found that when the distance between baffles is small,a relatively larger notch height ratio should be selected to ensure its better performance.关键词
管壳式换热器/弓形折流板/传热性能/流动性能/FLUENT软件Key words
shell and tube heat exchanger/segmental baffle/heat transfer performance/flow performance/FLUENT分类
通用工业技术引用本文复制引用
赵航,钱淼,褚利权..弓形折流板换热器流动与传热性能的数值模拟[J].轻工机械,2024,42(4):50-55,6.基金项目
浙江省"尖兵""领雁"研发攻关计划项目(2023C01158) （2023C01158）
浙江省"尖兵""领雁"研发攻关计划项目(2022C01188). （2022C01188）
