中国电机工程学报2011，Vol.31Issue(20)：75-80,6.
交错搭接螺旋折流板换热器壳程流动与传热的场协同分析
Field Synergy Analysis on Shell-side Flow and Heat transfer of Heat Exchanger With Staggered Overlap Helical Baffles
摘要
Abstract
Numerical investigation was carried out to study the effects of overlap size on shell-side flow and heat transfer characteristics of heat exchanger with helical baffles under the same helix pitch. Results show that, with the increase of overlap size, both convection heat transfer coefficient and pressure drop decrease; leakage from triangle zone mitigates, local flow resistance decreases, leakage from marginal triangle zone enhances the axial and rotating flow at the region closed to shell; the heat transfer on the central tube drop sharply, the heat transfer on the tube close to shell vary slightly. Field synergy analysis shows that, the leakage from triangle zone enhances heat transfer, the leakage from marginal zone impairs heat transfer. The bigger overlap size, the better global field synergy between flow field and heat flux field.关键词
螺旋折流板；交错搭接；螺旋角；换热器/流动阻力；场协同Key words
helical baffle/ staggered overlap/ helix angle/heat exchanger/ flow resistance/ field synergy分类
能源科技引用本文复制引用
汲水,杜文静,王鹏,程林..交错搭接螺旋折流板换热器壳程流动与传热的场协同分析[J].中国电机工程学报,2011,31(20):75-80,6.基金项目
国家重点基础研究发展计划项目(973项目)(2007CB206900)。 （973项目）
