Hydraulics - Flow in Rough & Smooth Pipes

410 Words2 Pages
Abstract This report contains the results & analysis of a fluid flow in rough and smooth pipe experiment. An experiment that forms the basis of pipe friction theory and fluid hydraulics. Theoretical values were calculated hf and then compared to experimental results. The findings from each experiment were logged and analysed and the reasons for any differences explained. It was found that head losses were not only affected by the roughness of the pipe, but also varied relative to the velocity/ discharge. 1. Experiment 1-Fluid Flow in Rough & Smooth Pipes 1.1. Introduction Energy losses are inevitable in pipelines, these losses are due to frictional resistances at the pipe wall which cannot be removed completely and the amount of frictional head losses can depend on many factors: - Pipe material, size of pipe relative to flow through the pipe, bends in the pipe, type of flow etc. All pipes, whether they be concrete, clay, PVC or other have a relative roughness at a microscopic level which contributes to frictional losses in the pipeline. It is important to calculate the frictional losses so adjustments can be made to the operating pressures to counteract the losses which are experienced over long distances. The calculations help better plot the actual velocities flowing within pipe networks so more accurate pipe size & gradients can be selected in practice. The main aim of this experiment was to investigate frictional head losses in rough and smooth pipes of varying diameter with varying velocities in order to analyse and discuss the finding of the experiment. Theoretical predictions were made for head loss (hf) and compared to actual ‘measured’ values obtained during the experiment. 1.2. Objective of Experiment • To investigate friction loss in rough and smooth pipes • Compare theoretical predictions for head loss with actual measured

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