化工学报2013，Vol.64Issue(8)：2769-2773,5.DOI:10.3969/j.issn.0438-1157.2013.08.009
螺旋折流板换热器的协同角分布特性及局部换热特征
Field synergy angle distribution and local heat transfer characteristic in shell and tube heat exchanger with helical baffles
摘要
Abstract
Three dimensional numerical simulation and field synergy principle analysis were conducted with simplified periodic models for shell and tube heat exchangers with helical baffles at three helix angles (30°,40°and 50°),and commercial codes of GAMBIT 2.3 and FLUENT 6.3 were adopted in the simulation.It is found that Nusselt number from the model with 40° angle is the largest and the predicted average field synergy intersection angle is the smallest,which is consistent with the field synergy principle.The distribution characteristics of field synergy angles reveal that the distribution is quite uniform through whole shell side of the exchangers.The investigation on local heat transfer characteristics in different regions on the shell side shows that the heat transfer rate in the central region of the heat exchanger increases with the increase of Reynolds number.关键词
螺旋折流板换热器/周期性模型/换热特性/场协同/数值模拟Key words
shell and tube heat exchanger with helical baffles/ periodic model/ heat transfer characteristic/field synergy principle/ numerical simulation分类
能源科技引用本文复制引用
张剑飞,陶文铨,何雅玲..螺旋折流板换热器的协同角分布特性及局部换热特征[J].化工学报,2013,64(8):2769-2773,5.基金项目
国家自然科学基金项目(51206129) （51206129）
国家重点基础研究发展计划项目(2013CB228304).supported by the National Natural Science Foundation of China (51206129) and the National Basic Research Program of China (2013CB228304). （2013CB228304）
