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- Title
Comparación teórica-numérica de la sobrepresión generada en sistemas de tuberías de diámetro variable.
- Authors
Salazar, Iván; Kong, Alen
- Abstract
This study analyses and compares the value of the overpressure in a valve located downstream in a gravity system when there are variations in the geometric properties in the conduction (diameter changes). In addition, the validity of the results obtained is analysed by comparing two methodologies: numerical modelling by finite elements and the application of theoretical expressions based on the method of celerity and equivalent length. For the numerical resolution of the equations a computational routine is developed in Matlab that allows representing the propagation of the pressure waves in the pipe. Then, the numerical model is defined considering all the conditions that the problem presents, and different cases are examined in which their variations in the geometric properties in the conduction are considering widenings and narrowing in different locations throughout the conduction. Finally, the study makes a comparison with the results of the maximum pressures obtained through the theoretical approximations.
- Subjects
WATER hammer; THEORY of wave motion; FINITE element method; GRAVITY; VALVES
- Publication
Obras y Proyectos, 2020, Issue 27, p78
- ISSN
0718-2805
- Publication type
Article
- DOI
10.4067/s0718-28132020000100078