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1 International Journal of Applied Mechanics and Engineering

1 2002

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Equation of the pulsating axially-symmetrical liquid flow in a pipe with a constriction

Fydrych J., Jeżowiecka-Kabsch K., Szewczyk H.

International Journal of Applied Mechanics and Engineering

2002

Vol. 7, no 4

1201-1209

In this paper, the results of theoretical studies on the unsteady liquid flow in a pipe with an element causing the occurrence of recirculation zones are presented. The model of unsteady flow in a pipe with a constriction has been developed. Starting from the principle of momentum conservation referred to a control volume, the differential equation of the flow has been obtained. From this equation, the relationship between the height of a hydraulic loss and the volume rate of flow for the pulsating liquid flow in a constricted pipe has been derived. In this relationship, an element allowing for the occurrence of recirculation zones and their time variation have been identified.