Experimental research of multiphase flow with cavitation in the nozzle
1 Department of Hydromechanics and Hydraulic Equipment, Faculty of Mechanical Engineering, VSB – Technical University of Ostrava, 17. listopadu 15, 708 33 Ostrava, Czech Republic
2 Institute of Power Engineering and Turbomachinery, Faculty of Energy and Environmental Engineering, Silesian University of Technology, Konarskiego Street 18, 44 100 Gliwice, Poland
3 Department of Controls Systems and Instrumentations, Faculty of Mechanical Engineering, VSB – Technical University of Ostrava, 17. listopadu 15, 708 33 Ostrava, Czech Republic
a Corresponding author: firstname.lastname@example.org
Published online: 28 March 2016
The paper deals with the problems of cavitation in water flow in the nozzle. The area of research is divided into two directions (experimental and numerical research). During the experimental research the equipment with the nozzle is under the measurement and basic physical quantities such as pressure and volume flow rate are recorded. In the following phase measuring of noise which is generated during flow through the nozzle in the area of cavitation is measured at various operating conditions of the pump. In the second part the appropriate multiphase mathematical model including the consideration of cavitation is defined. Boundary conditions for numerical simulation are defined on the basis of experimental measurements. Undissolved air in the flow is taken into account to obtain pressure distribution in accordance to measured one. Results of the numerical simulation are presented by means of basic current quantities such as pressure, velocity and volume fractions of each phase. The conclusions obtained from experimental research of cavitation were applied to modify the multiphase mathematical model.
© Owned by the authors, published by EDP Sciences, 2016
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