摘要
研究了螺旋槽管内径Di、螺距P、槽深e等各因素对管内流体传热性能的影响,用数值模拟法进行传热系数数值计算,并与相同材质、相同直径和壁厚的光管同步对比。对计算结果进行线性回归处理,确立Nu与Re的关联式。结果表明,螺旋槽管具有较好的传热强化作用,在同等Re工况下,其传热系数较光管提高10%～60%。
The effect of spirally corrugater tube inner diameter Di,pitch p,the groove depth e on internal fluid heat transfer are studied,numerial simulation is used to calculate the heat transfer coefficient,and the same is done with the smooth tube which is in the same material,same diameter and thickness.With multiple linear regresstion,the correlative expression of Nu and Re are obtained.The result shows,spirally corrugated tubes can enhance heat transfer performance of internal fluid,at same condition,the heat transfer coefficient can improves 10%-60%.
出处
《河南化工》
CAS
2012年第1期30-33,共4页
Henan Chemical Industry
基金
国家大学生创新性实验计划项目(101045929)
关键词
螺旋槽管
传热强化
数值研究
spirally corrugated tube
heat transfer enhancement
numerical simulation
