摘要：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 n-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 (θ) = 15°–60° is thicker than θ = 135°–165°. The liquid film on cam tube at θ = 15°–60° is slightly thinner than θ = 135°–165°. The liquid film thickness varies from thinner to thicker for ellipse-shaped, cam-shaped, egg-shape and circle within θ = 15°–60°. The effect of tube shape is insignificant on 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. ? 2023 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd

ISSN号：1004-9541

卷、期、页：卷60：16-25

发表日期：2023-08-01

影响因子：0.000000

期刊分区（SCI为中科院分区）：二区

收录情况：EI（工程索引）,CSCD（中国科技引文期刊）（核心）,CSTPCD（中国科技核心期刊）（统计源期刊）

发表期刊名称：Chinese Journal of Chemical Engineering

通讯作者：何雪静,俞海

第一作者：李振林,王吉

论文类型：期刊论文

论文概要：何雪静,李振林,王吉,俞海，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，2023，卷60：16-25

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