摘要
通过数值模拟和实验验证考察了流体在波纹管内的流动与传热情况，研究了不同的流体雷诺数、波形及管径大小对波纹管强化传热性能的影响，探讨了其强化传热机理。研究发现，在湍流范围内，波纹管的强化传热倍数达到相同条件下直管的1．78～3．10倍，且最佳强化效果出现在RP=10000附近；文中拟合出的考虑波形影响的波纹管内传热准则方程，对波纹管的工程设计和应用具有一定的指导意义。
Fluid flow and heat transfer in a corrugated tube have been numerically and experimentally studied. The influence of different Reynolds Number, wave shape and pipe diameter has been investigated. It was found that in the turbulent region, the average convection film coefficient in a corrugated tube is 1.78- 3.10 times that in a straight tube under the same conditions, and the highest heat transfer occurs when Re is about 10000. To facilitate engineering design and application of corrugated tube heat exchangers, a formula for the calculation of the average convection film coefficient of a fluid in a corrugated tube is also given.
出处
《北京化工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第3期68-72,共5页
Journal of Beijing University of Chemical Technology(Natural Science Edition)
基金
北京市教育委员会共建项目(XK100100541)
关键词
波纹管
数值模拟
实验验证
强化传热
准则方程
corrugated pipe
numerical simulation
experimental verification
heat transfer intensification
formula for heat transfer
