Open AccessA Mathematical Model on Linkage Leakage in Sewage Pipes Laid in a Porous Ground Using Computation Fluid Dynamics.
Author(s) -
Joseph Ebelait,
Twaibu Semwogerere,
Moses Nagulama,
Asaph Muhumuza Keikara
Publication year - 2021
Publication title -
east african journal of engineering/east african journal of engineering
Language(s) - English
Resource type - Journals
eISSN - 2707-5397
pISSN - 2707-5389
DOI - 10.37284/eaje.4.1.482
Subject(s) - leak , mechanics , inlet , leakage (economics) , computational fluid dynamics , fluent , body orifice , materials science , porous medium , volumetric flow rate , fluid dynamics , pipe flow , petroleum engineering , geotechnical engineering , porosity , environmental science , engineering , mechanical engineering , environmental engineering , turbulence , physics , economics , macroeconomics
This study describes the linkage leakage in sewage pipes through a porous media using computational fluid dynamics with the presence of one leak through fluid simulations using the Ansys fluent 17.2 commercial software based on standard k-ε model under steady-state condition. The pipe section is three-dimensional with a pipe length of 40 mm, a pipe diameter of 20 mm, and leak orifice diameter of 2 mm with a porous media of length 25 mm and width 30 mm. The interest of this study was to reduce the rate of sewage leakage in pipes laid underground by use computational fluid dynamics. The simulation results obtained shows that when the flow is subjected to an outlet pressure between 1 Pa to 275000 Pa the sewage leaks at pressures of 99499 Pa to 278799.8 Pa indicating that increase of outlet pressures increases the pressure at the leak point and also an increase in the inlet velocity resulted into an increase of velocity at the leak point and no significant change in sewage flow rate with increased inlet velocities. Therefore, monitoring of the pressure and velocity fields along the pipeline is an extremely important tool to identify leaks since these fields are affected by perturbations both before the leak point and after the leak point.