Multiphase flow and cavitation - Comparison of Flow in Rectangular and Circular Nozzle
Department of Hydromechanics and Hydraulic Equipment, Faculty of Mechanical Engineering, VŠB-Technical University of Ostrava, 17. listopadu 15, 708 33, Ostrava, Czech Republic
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Published online: 6 May 2015
The paper describes the experimental measurement of cavitation domain at multiphase turbulent flows in rectangular and circular nozzle. The flowing medium is water. Both nozzles were measured at maximum flow range without saturation of circuit by air (without cavitation and with cavitation). Subsequently, the article describes the changes in the sizes of cavitation domain during multiphase flow if the circuit is saturated by the known amount of air. In the article the sizes of cavitation domain with and without air saturating are presented for both nozzles. Subsequently the frequency of cavitation vortices are also calculated using Strouhal number. These measured values and the effect of air content in the circuit will be further used for subsequent numerical modelling and the results will be verified each other.
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