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

作　　者：Zhiyuan Tu Fusheng Peng Zijie Wei Guo Qian Jie Wang Chunjie Huang 

机构地区：[1]College of National Defense Engineering,Army Engineering University of PLA,Nanjing,210007,China [2]92318 Troops,Beijing,100089,China

出　　处：《Fluid Dynamics & Materials Processing》2021年第6期1195-1211,共17页流体力学与材料加工（英文）

基　　金：Ministry of Communications and Provincial and Joint Research Project[2008-353-332-170].

摘　　要：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.

关 键 词：Main cable dehumidification computational fluid dynamics dry air semi-empirical flow resistance formula 

分 类 号：TN9[电子电信—信息与通信工程]