Effects of tube cross-sectional shapes on flow pattern, liquid film and heat transfer of <i>n</i>-pentane across tube bundles

Xuejing He; Zhenlin Li; Ji Wang; Hai Yu

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Effects of tube cross-sectional shapes on flow pattern, liquid film and heat transfer of n-pentane across tube bundles

Full Length Article | Updated：2026-01-06

- Effects of tube cross-sectional shapes on flow pattern, liquid film and heat transfer of n-pentane across tube bundles
- Chinese Journal of Chemical Engineering Vol. 60, Issue 8, Pages: 16-25(2023)
- Affiliations：
  
  College of Mechanical and Transportation Engineering, China University of Petroleum (Beijing),Beijing,China,102249
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2023
- Accepted：
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-pentane across tube bundles[J]. 中国化学工程学报, 2023, 60(8): 16-25.
DOI：

-pentane across tube bundles[J]. 中国化学工程学报, 2023, 60(8): 16-25. DOI：

摘要

Abstract

The heat transfer of hydrocarbon refrigerant across tube bundles have been widely used in refrigeration. Three-dimensional simulation model using volume of fluid (VOF) was presented to study the effects of tube shapes on flow pattern

film thickness and heat transfer of

-pentane across tube bundles

including circle

ellipse-shaped

egg-shaped and cam-shaped tube bundles. Simulation results agree well with experimental data in the literature. The liquid film thickness of sheet flow and heat transfer for different tube shapes were obtained numerically. The flow pattern transition occurs lower vapor quality for ellipse-shaped tube than other tube shapes. For sheet flow

the liquid film on circle tube and ellipse-shaped tube is symmetrically distributed along the circumferential direction. However

the liquid film on egg-shaped tube at circumferential angles (

) = 15°-60° is thicker than

= 135°-165°. The liquid film on cam tube at

= 15°-60° is slightly thinner than

= 135°-165°. The liquid film thickness varies from thinner to thicker for ellipse-shaped

cam-shaped

egg-shape and circle within

= 15°-60°. The effect of tube shape is insignificant o

n thin liquid film thickness. Ellipse-shaped tube has largest heat transfer coefficient for sheet flow. In practical engineering

the tube shape could be designed as ellipse to promote heat transfer.

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Effects of tube cross-sectional shapes on flow pattern, liquid film and heat transfer of n-pentane across tube bundles

DOI：

摘要

Abstract

关键词

Keywords

references