Experimental and Numerical Investigation on the Parameters of Ventilated Super Cavitation around 30 degree Conical Cavitator

Authors

Sistan & Baluchestan

Abstract

In present study, ventilated super-cavitating flow around cavitator was studied experimentally. In this stage, a 30-degree cone cavitator was tested in open water tunnel. The fluid flow velocity in the test section was between 24 to 37 m/s and rate of injection was constant. Then, ventilated super-cavitating flow was simulated based on condition inlet and injection. Finally, numerical results compared against existing experimental data. Also the 3D multiphase fluid flow over the cavitators within the test section are modeled and analyzed numerically by solving the corresponding governing equationsusing finite volume method and mixture model. Good agreement was observed in two-way comparison. Finally, effect of significant parameters .i.e. cavitation number, inlet velocity on drag coefficient were studied. The results indicate that the maximum cavity diameter and its length increase as the cavitation number decreases. Also, with a decrease velocity flow, the rate of cavity length changes is reduced. the cavity length variation is similar to the results of cavity diameter.

Keywords

Main Subjects

Journal of Solid and Fluid Mechanics
Volume 5, Issue 3 - Serial Number 3
September and October 2015
Pages 303-314

Files

Share

How to cite

Statistics