Determination of Pressure Drop and Flow Velocity in Old Rough Pipes

Proceedings

Annus, Ivar¹  Kaur, Katrin²  Vassiljev, Anatoli³ 

[1] Author to whom correspondence should be addressed.;Department of Civil Engineering and Architecture, Tallinn University of Technology, 19086 Tallinn, Estonia;Presented at the 3rd EWaS International Conference on “Insights on the Water-Energy-Food Nexus”, Lefkada Island, Greece, 27–30 June 2018

关键词: water distribution system;    roughness;    pipe diameter;    calibration;    CFD;   

DOI  :  10.3390/proceedings2110590

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

The aim of this paper is to determine the influence of irregular wall roughness of old pipes to pressure drop and flow velocity in Water Distribution Systems (WDS). Typical calibration of a numerical model of an existing WDS that contains old pipes is usually based on the estimation of roughness of the pipes using nominal pipe diameters. Due to wall build-up the shape of the inner pipe surface can vary temporally and spatially. In this study a series of numerical investigations are carried out using CFD (Computational Fluid Dynamics) software to determine the effect of irregular pipe diameter to pressure drop and flow velocity.

【 授权许可】

CC BY