Author(s):
1. Jasmina Bogdanović-Jovanović, Faculty of Mechanical Engineering in Niš, Serbia
2. Zivojin Stamenkovic, Faculty of Mechanical Engineering in Niš, Serbia
3. Živan Spasić, Faculty of Mechanical Engineering in Niš, Serbia
4. Jelena Petrović, Faculty of Mechanical Engineerning, Serbia
5. Milos Kocic, Faculty of Mechanical Engineering in Niš, Serbia

Abstract:
Cavitation problems occurs in water flow where the local pressure reaches saturated vapour pressure, due to the sudden increase of local velocity values, forming bubbles and different forms of flow discontinuity. Water flow in the Venturi nozzle is the typical example of potentially cavitation flow. Due to the large importance of Venturi nozzles in engineering practice, it is important to determine their cavitation characteristics, such a cavitation number and loss coefficient of the nozzle. In case we are unable to obtain cavitation characteristics of the nozzle experimentally, there is the possibility to conduct numerical simulations of the flow in the Venturi nozzle. The objective of this study is to present the possibilities of obtaining cavitation characteristics of Venturi nozzles by applying numerical simulations, using Ansys CFX software, and to determine the optimal numerical modelling of flow in the case of Venturi nozzle.

Key words:
Venturi nozzle,cavitation,numerical simulation

Thematic field:
Energetics and Thermal Engineering

Date of abstract submission:
27.02.2017.

Conference:
13th International Conference on Accomplishments in Mechanical and Industrial Engineering