Maximum pressure evaluation during expulsion of entrapped air from pressurized pipelines
Number of Authors: 3
2017 (English)In: Journal of Applied Fluid Mechanics, ISSN 1735-3572, E-ISSN 1735-3645, Vol. 10, no 1, 11-20 p.Article in journal (Refereed) Published
Pressurized pipeline systems may have a wide operating regime. This paper presents the experimental analysis of the transient flow in a horizontal pipe containing an air pocket, which allows the ventilation of the air after the pressurization of the hydraulic system, through an orifice placed at the downstream end. The measurements are made on a laboratory set-up, for different supply pressures and various geometries of water column length, air pocket and expulsion orifice diameter. Dimensional analysis is carried out in order to determine a relation between the parameters influencing the maximum pressure value. A two equations model is obtained and a criterion is established for their use. The equations are validated with experimental data from the present laboratory set-up and with other data available in the literature. The results presented as nondimensional quantities variations show a good agreement with the previous experimental and analytical researches.
Place, publisher, year, edition, pages
2017. Vol. 10, no 1, 11-20 p.
Fluid Mechanics and Acoustics
Research subject Fluid Mechanics
IdentifiersURN: urn:nbn:se:ltu:diva-61716ISI: 000392357300002ScopusID: 2-s2.0-85009787651OAI: oai:DiVA.org:ltu-61716DiVA: diva2:1069994
Validerad; 2017; Nivå 2; 2017-01-31 (andbra)2017-01-312017-01-312017-02-16Bibliographically approved