Experimental study and numerical simulation on convective heat transfer and pressure drop of internally longitudinal finned tube

WU Feng; LIN Mei; TIAN Lin; WANG Qiuwang; LUO Laiqin

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Experimental study and numerical simulation on convective heat transfer and pressure drop of internally longitudinal finned tube

更新时间：2025-12-10

- Experimental study and numerical simulation on convective heat transfer and pressure drop of internally longitudinal finned tube
- CIESC Journal Issue 11, Pages: 2065-2068(2005)
- 作者机构：
  
  西安交通大学动力工程多相流国家重点实验室,陕西,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 November 2005，
  
  Published：25 November 2005
- 稿件说明：
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WU Feng, LIN Mei, TIAN Lin, et al. Experimental study and numerical simulation on convective heat transfer and pressure drop of internally longitudinal finned tube[J]. CIESC Journal, 2005, (11): 2065-2068.
DOI：

WU Feng, LIN Mei, TIAN Lin, et al. Experimental study and numerical simulation on convective heat transfer and pressure drop of internally longitudinal finned tube[J]. CIESC Journal, 2005, (11): 2065-2068. DOI：

摘要

Abstract

The fluid flow and heat transfer characteristics of internal longitudinal finned tube were investigated experimentally

and were compared with those of circular annulus tube. It was shown that the internally longitudinal finned tube had better heat transfer performance than the circular annulus tube with increase of pressure drop simultaneously.Numerical results based on the realized k-ε turbulence model agreed well with the experimental results.It was found that there existed a critical Reynolds number

that is

when Reynolds number was less than the critical value

the Nusselt number of internally longitudinal finned tube was smaller than that of circular annulus tube in laminar flow.In addition

the Reynolds number for the transition from laminar to turbulent flow was greatly decreased due to the existence of internal fins.

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