Laminar flow friction factor in highly curved helical pipes: Numerical investigation, predictive correlation and experimental validation using a 3D-printed model

被引：9

作者：

Abushammala, Omran ^{[1
]}

Hreiz, Rainier ^{[1
]}

Lemaitre, Cecile ^{[1
]}

Favre, Eric ^{[1
]}

机构：

[1] Univ Lorraine, Lab React & Genie Proc, CNRS, F-54000 Nancy, France

来源：

CHEMICAL ENGINEERING SCIENCE | 2019年 / 207卷

关键词：

3D printing; CFD; Correlation; Dean vortices; Friction factor; Helical pipe; PRESSURE-DROP CORRELATIONS; MEMBRANE CONTACTORS; DEAN VORTICES; HEAT-TRANSFER; FLUID;

D O I：

10.1016/j.ces.2019.07.018

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Highly curved helical pipes offer attracting potentialities for intensified mass/heat transfer performances as they generate intense Dean-type vortices. The evaluation of friction factor in such geometries is necessary for assessing the trade-offs between the increase of transfer efficiency and the associated specific energy requirement. Unfortunately, such data are lacking for highly curved helixes, probably due to the difficulty to manufacture these geometries through traditional manufacturing techniques. In this paper, CFD simulations are carried out for determining the laminar flow friction factor in helical pipes, particularly highly curved ones. For an experimental validation of the numerical results, a highly curved helix was built by 3D-printing. Existing correlations are shown to fail for the accurate prediction of the friction factor in highly curved helixes. A new correlation is thus proposed. An excellent agreement is obtained between the experimental pressure drop measurements and the proposed correlation predictions. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：1030 / 1039

页数：10

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