Open Access

ARTICLE

Simplified Calculation of Flow Resistance of Suspension Bridge Main Cable Dehumidification System

by Zhiyuan Tu¹, Fusheng Peng^1,*, Zijie Wei¹, Guo Qian², Jie Wang¹, Chunjie Huang¹

1 College of National Defense Engineering, Army Engineering University of PLA, Nanjing, 210007, China
2 92318 Troops, Beijing, 100089, China

* Corresponding Author: Fusheng Peng. Email:

Fluid Dynamics & Materials Processing 2021, 17(6), 1195-1211. https://doi.org/10.32604/fdmp.2021.011753

Received 28 May 2020; Accepted 11 January 2021; Issue published 08 September 2021

Abstract

To calculate the flow resistance of a main cable dehumidification system, this study considers the air flow in the main cable as the flow in a porous medium, and adopts the Hagen–Poiseuille equation by using average hydraulic radius and capillary bundle models. A mathematical derivation is combined with an experimental study to obtain a semi-empirical flow resistance formula. Additionally, Fluent software is used to simulate the flow resistance across the main cable relative to the experimental values. Based on the actual measured results for a Yangtze River bridge, this study verifies the semi-empirical formula, and indicates that it can be applied in actual engineering.

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Keywords

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