An Evaluation of Correlations for Predicting Pressure Drop of Air-Water Flow in Narrow Rectangular Duct

Authors

  • Guangfei Wang China Nuclear Power Engineering Co., Ltd., 117 Sanhuan North Road, Haidian District, Beijing, China
  • Licheng Sun Sichuan University, Chengdu, 610065, China
  • Liang Zhao Sichuan University, Chengdu, 610065, China
  • Min Du Sichuan University, Chengdu, 610065, China

DOI:

https://doi.org/10.15377/2409-5826.2018.05.5

Keywords:

Two-phase flow, Frictional pressure drop, Narrow rectangular duct, Two-phase friction multiplier.

Abstract

 Aiming at developing a more common method for predicting two-phase flow pressure drop for small channels, experiments on frictional pressure drop of air-water flow in a vertical narrow rectangular duct with a cross-section of 40 mm by 1.6 mm were conducted at atmospheric pressure. The mass flow rates of air and water covered the ranges from 0.03 to 12.5 kg/h and from 19 to 903 kg/h, respectively. It was found that the two-phase flow can be divided into three regions according to the liquid only Reynolds number, by which a modified Chisholm two-phase multiplier was proposed for predicting frictional pressure drop. Some leading correlations for predicting two-phase flow pressure drop were compared with the new correlation against current experimental data, the latter had and a mean deviation of 7.2%, showing a better agreement with the experimental results.

Author Biographies

Licheng Sun, Sichuan University, Chengdu, 610065, China

State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower

Liang Zhao, Sichuan University, Chengdu, 610065, China

State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower

Min Du, Sichuan University, Chengdu, 610065, China

State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower

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Published

2018-11-12

How to Cite

1.
Guangfei Wang, Licheng Sun, Liang Zhao, Min Du. An Evaluation of Correlations for Predicting Pressure Drop of Air-Water Flow in Narrow Rectangular Duct. J. Adv. Therm. Sci. Res. [Internet]. 2018Nov.12 [cited 2021Sep.26];5(1):34-43. Available from: https://www.avantipublishers.com/jms/index.php/jatsr/article/view/868

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