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

• Autorzy: Fydrych J. , Jeżowiecka-Kabsch K. , Szewczyk H.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

unsteady liquid flow; pulsating flow; pipe with a constriction

PL

hydromechanika; przepływ cieczy; rura

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2002
• Tom: Vol. 7, no 4
• Strony: 1201--1209
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Fydrych J.

• Faculty of Mechanical and Power Engineering Wroclaw University of Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław, POLAND

autor

Jeżowiecka-Kabsch K.

• Faculty of Mechanical and Power Engineering Wroclaw University of Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław, POLAND

autor

Szewczyk H.

• Faculty of Mechanical and Power Engineering Wroclaw University of Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław, POLAND

Bibliografia

• [1] Jeżowiecka-Kabsch K., Szewczyk H., Bechtold Z., Wędrychowicz W. and Grigoriew A. (1999): Visulization Study of Formation and Evolution of Vortex Structures in a Flow Through Constriction. - Wroclaw: Technical University Press (in Polish).
• [2] Lee T.S. and Shi Z.D. (1999): Effects of Reynolds number on physiological-type pulsatily flows in a pipe with ring-type constrictions. — International Journal for Numerical Methods in Fluids, vol.30, pp.743-761.
• [3] Lee T.S., Shi Z.D. and Winoto S.H. (1996): Numerical studies of transitional turbulent pulsatile flow in pipes with ring-type constrictions. - International Journal for Numerical Methods in Fluids, vol.22, pp. 1169-1187.
• [4] Ojha M., Cobbold R.S.C., Johnston K.W. and Hummel R.L. (1989): Pulsatile flow through constricted tube: an experimental investigation using photochromic tracer methods. - Journal of Fluid Mechanics, vol.203, pp. 173-197.
• [5] Puzyrewski R. and Sawicki J. (1998): The Bases of Fluid Mechanics. - Warsaw: PWN (in Polish).
• [6] Streeter V.L., Wylie E.B. and Bedford K.W. (1998): Fluid Mechanics. - USA: McGraw-Hill Companies.
• [7] Szewczyk H. (1977): Unsteady Flow of Incompressible Liquid in Series-parallel Hydraulic Systems. - Wroclaw: Technical University Press (in Polish).