000021992 001__ 21992
000021992 005__ 20170622131316.0
000021992 04107 $$aeng
000021992 046__ $$k2017-06-15
000021992 100__ $$aastaraki, abdolreza
000021992 24500 $$aIMPROVED ESTIMATION OF PIPE LEAKAGE FOR VARIOUS LEAK GEOMETRY

000021992 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021992 260__ $$bNational Technical University of Athens, 2017
000021992 506__ $$arestricted
000021992 520__ $$2eng$$aPast earthquakes show that a majority of pipe damages occur as leaks. A leak is essentially the discharge of an opening in the pipe wall from which water is discharged into the surrounding soil. Estimation of leakage discharge is an influencing factor in performance evaluation of water supply system in the immediate aftermath of large earthquakes in populated cities. For this purpose, estimation of the discharge with an acceptable precision is important. So far, few researchers have worked on this issue and have developed some software and have applied their computer programs for modeling the performance of water supply systems after major earthquakes without completely addressing the geometry of the opening. In this paper, in order to evaluate the seismic performance of water supply systems more reliably, a modification is proposed for Torricelli formula by implementing which, the leakage discharge of the pipe opening can be estimated with higher precision. For this purpose the opening discharge is calculated through modeling pipe and opening by finite volume method based on Navier-Stokes equations. As a result, the leakage amount can now be determined more precisely. The model has been validated and the computation is verified by means of laboratory experiments.

000021992 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021992 653__ $$aFinite volume method, Navier-Stokes equations, Laboratory experiment, Numerical Simulation, Pipe Leakage, Opening Geometry

000021992 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021992 720__ $$aastaraki, abdolreza$$isoroushian, aram$$ihosseini, mahmood
000021992 8560_ $$ffischerc@itam.cas.cz
000021992 8564_ $$s117176$$uhttps://invenio.itam.cas.cz/record/21992/files/18585.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS17] Computational issues in earthquake engineering
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000021992 962__ $$r21500
000021992 980__ $$aPAPER