Effect of fouling on heat transfer field synergy in alternating elliptical axis tubes

ZHANG Aiping; WANG Xinling; ZHANG Hongxue

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Effect of fouling on heat transfer field synergy in alternating elliptical axis tubes

更新时间：2025-09-28

- Effect of fouling on heat transfer field synergy in alternating elliptical axis tubes
- Thermal Power Generation Vol. 44, Issue 2, Pages: 31-35(2015)
- 作者机构：
  
  东北电力大学能源与动力工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK124
- Published：2015
- 稿件说明：
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ZHANG Aiping, WANG Xinling, ZHANG Hongxue. Effect of fouling on heat transfer field synergy in alternating elliptical axis tubes[J]. Thermal power generation, 2015, 44(2): 31-35.
DOI：

ZHANG Aiping, WANG Xinling, ZHANG Hongxue. Effect of fouling on heat transfer field synergy in alternating elliptical axis tubes[J]. Thermal power generation, 2015, 44(2): 31-35. DOI：

摘要

针对结垢厚度分别为0.5、1.0、1.5、2.0mm的圆管及交叉缩放椭圆管进行数值模拟

分析在雷诺数Re分别为10 000、12 000、18 000、24 000、30 000的流动状态下

污垢对速度场和温度场及其协同角、协同数的影响

并对圆管及交叉缩放椭圆管进行比较。结果表明:交叉椭圆管内场协同数随着Re的增加而减小

随着污垢厚度的增加而增大

而平均协同角则相反;沿管长方向场协同数逐渐减小

对于每个过渡段

场协同数有2次最大峰值和2次最小峰值;交叉缩放椭圆管的平均场协同数大于圆管

平均协同角小于圆管。

Abstract

Numerical simulation on circle tube and alternating elliptical axis tube with fouling thickness of0.5mm

1.0mm

1.5mm and 2.0mm was carried out to analyze the effects of fouling on velocity field

temperature field

synergy angle and and synergy number

under conditions with Renolds number of10 000

12 000

18 000

24 000 and 30 000.Moreover

comparative analysis on circular tube and alternating elliptical axis tube was performed.The results indicate that

in the alternating elliptical axis tube

the field synergy number decreases with the increasing Reynolds number while increases with the fouling thickness.The average synergy angle has the opposite changes.Along the tube length

the field synergy number decreases gradually

it has two maximum peaks and two minimum peaks within each transition section.The alternating elliptical axis tube has greater mean-field synergy number but smaller average synergy angle than the circle tube.

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