ABSTRACT
This chapter describes the theories of pipe flow, beginning with a review of the historical context and ending with the practical applications. The treatment is limited to steady flow in pressurised and non-pressurised pipes, which is the principal means by which individual pipelines are designed. Firstly, the historical context to the development of pipe flow theories is described leading to the development of the fundamental concepts of pipe flow for both laminar and turbulent flow. The design equations for pipe flow are then detailed, including the Moody diagram and the Colebrook–White transition formula. Estimation of discharge, required pipe diameter and head loss follow. The chapter ends with a discussion of local head losses and the flow in partially full (non-pressurised) pipes. Worked examples and problems for solution are also given in the text.
