Mathematical Model of Corrosion Inside Metal Water Pipes

EasyChair Preprint 2908

Abstract

In water supply systems, one of the most important factors is corrosion of pipelines from steel and cast-iron pipes, an increase in pressure losses, which reduces water flow and increases energy consumption. Excessive corrosion intensity is determined by roughness coefficient C, but determining roughness coefficient of old metal pipes is difficult. The results of the research are the obtained formulas, based on numerous experimental studies of various authors, allow one to theoretically determine the dependence of the roughness coefficient C on the age of operation and the composition of natural waters of cast-iron pipes, steel pipes and pipes with internal cement coatings. Analysis of calculation results according to the new formula indicates that the decreasing amplitudes of the roughness coefficient C slow down after 20, 30, 40, 50 years and do not decrease to zero.

Keyphrases: Absolute roughness, Corrosion, hydraulic friction, roughness coefficient

@booklet{EasyChair:2908,
  author    = {Vladimir Ivanovich Shcherbakov and Nguyen Huy Cuong},
  title     = {Mathematical Model of Corrosion Inside Metal Water Pipes},
  howpublished = {EasyChair Preprint 2908},
  year      = {EasyChair, 2020}}