期刊论文

Zeng, W.-L.

中文

化学工程

1005-9954

2011

39

1

23-27

10.3969/j.issn.1005-9954.2011.01.006

教育部强化传热与过程节能重点实验室开放基金（KF0706）；

本校为其他机构

采用多孔介质-分布阻力模型,对一种新型并流多通道进出口结构（MPC）轴流管壳式换热器壳程流场进行数值研究。在传热管长6.0 m不变,分别针对长径比L/D=2.0和L/D=1.5二种情况,研究Re和通道数N对壳侧流场的分布及阻力变化规律。结果表明:在相同的Re和L/D下,随着N的增加,壳程的流场分布不均现象得到有效的遏制,壳程压降将急剧降低,最大降幅达到50%以上;当L/D不变时,Re的变化对壳程流场分布影响极小。

The numerical investigation on shell-side fluid flow distribution of a novel longitudinal flow shell-and-tube heat exchanger with multi-parallel-channel (MPC) inlet and outlet was presented by using porous media and distributed resistance model. Under the condition of constant heat transfer tube length L=6.0 m, such characteristics as shell-side fluid flow distribution and pressure drop performance were investigated with different Reynolds number Re and the number of MPC (N) at the ratio of tube length to diameter L/D=2.0 and L/D=1.5, respectively. Investigated results show that with the incre...