Hydraulic transients analysis in pipe networks by the method of characteristics (MOC)

• Autorzy: Wichowski R.
• Języki publikacji: EN

Abstrakty

EN

The paper presents results of an experimental and theoretical study of the hydraulic transients in straight pipes and numerical simulations of unsteady flow in pipe networks. A mathematical model consists of a set of partial differential equations of hyperbolic type, which have been transformed by the method of characteristics into ordinary differential equations which are solved by the predictor-corrector method. Experimental tests have been performed, in order to examine the hydraulic transients phenomenon, in a single straight steel pipe. The experiments were carried out in the hydraulic laboratory of the Institute of Water Supply and Water Engineering, Environmental Engineering Faculty, Warsaw University of Technology. The numerical results show that the presented one dimensional model for a single pipe correctly describes the phenomenon since there is a good agreement with experimental maximum and minimum oscillations. In the paper, selected exemplary equations in a difference form for the pipe networks are also presented. One calculation example is given relating to the complex water-pipe network consisting of 17 loops, 48 pipelines and 33 nodes, supplied by two independent sources. Water-hammer throughout the whole pipeline network was caused by closing the gate valve at mid-point of one selected pipe. The results of the numerical calculations are presented in graphic form with respect to the final cross-sections of pipes.

Słowa kluczowe

EN

hydraulic transients; method of characteristics; single pipe; experimental measurement; pipe networks; numerical simulations

• Wydawca: Institute of Hydro-Engineering of Polish Academy of Sciences
• Czasopismo: Archives of Hydro-Engineering and Environmental Mechanics
• Rocznik: 2006
• Tom: Vol. 53, nr 3
• Strony: 267--291
• Opis fizyczny: Bibliogr. 22 poz., il.

Twórcy

autor

Wichowski R.

• Gdańsk University of Technology, Faculty for Civil and Environmental Engineering, ul. Narutowicza 11/12, 80-952 Gdańsk, Poland,

Bibliografia

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