A JOINT EXPERIMENTAL AND NUMERICAL INVESTIGATION ON FLOW STRUCTURE AND CRITICAL CONDITION AT A VERTICALLY DOWNWARD INTAKE

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HASHEMI MARGHZAR SH.; RAHIMZADEH H.; MONTAZERIN N.

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Journal Paper

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Journal: AMIRKABIR Year:2002 | Volume:13 | Issue:52 Page(s): 126-135

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Information Journal Paper

Title

A JOINT EXPERIMENTAL AND NUMERICAL INVESTIGATION ON FLOW STRUCTURE AND CRITICAL CONDITION AT A VERTICALLY DOWNWARD INTAKE

Author(s)

HASHEMI MARGHZAR SH. | RAHIMZADEH H. | MONTAZERIN N. | Issue Writer Certificate

Keywords

CRITICAL CONDITION

VERTICALLY DOWNWARD INTAKE NUMERICAL SIMULATION

TURBUIENT FLOW

FREE SURFACE

Abstract

This paper present a joint numerical-experimental study of the flow behaviour in a vertically downward intake in absence of any rotational effects. A numerical method based on finite volume is applied on governing equations in a cylindrical coordinate system to simulate the gravitational flow with fixed FREE SURFACE grid. Results introduce CRITICAL CONDITION based on Froude number. In this study, it is assumed that the CRITICAL CONDITION is due to existing of continuous zero pressure line from the FREE SURFACE to the intake pipe. In the region Fr<1.0, a fairly good agreement between numerical results and experimental data are observed. Predicted submergence depth from numerical approach is less than values from the experimental data for Fr>1.0. It expresses that the CRITICAL CONDITION in high flow rate highly depends on random circulation due to non-uniformity in the flow field rather than flow regime and hydraulic parameters.

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APA: Copy

HASHEMI MARGHZAR, SH., RAHIMZADEH, H., & MONTAZERIN, N.. (2002). A JOINT EXPERIMENTAL AND NUMERICAL INVESTIGATION ON FLOW STRUCTURE AND CRITICAL CONDITION AT A VERTICALLY DOWNWARD INTAKE. AMIRKABIR, 13(52), 126-135. SID. https://sid.ir/paper/546833/en

Vancouver: Copy

HASHEMI MARGHZAR SH., RAHIMZADEH H., MONTAZERIN N.. A JOINT EXPERIMENTAL AND NUMERICAL INVESTIGATION ON FLOW STRUCTURE AND CRITICAL CONDITION AT A VERTICALLY DOWNWARD INTAKE. AMIRKABIR[Internet]. 2002;13(52):126-135. Available from: https://sid.ir/paper/546833/en

IEEE: Copy

SH. HASHEMI MARGHZAR, H. RAHIMZADEH, and N. MONTAZERIN, “A JOINT EXPERIMENTAL AND NUMERICAL INVESTIGATION ON FLOW STRUCTURE AND CRITICAL CONDITION AT A VERTICALLY DOWNWARD INTAKE,” AMIRKABIR, vol. 13, no. 52, pp. 126–135, 2002, [Online]. Available: https://sid.ir/paper/546833/en

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