Abstract
The purpose of this study is to investigate the generation and development of cavitation in circular and elliptical nozzles. In order to investigate the influence of cavitation, the experiment was conducted with a set of elliptical nozzles that had the same cross-sectional area, different orifice aspect ratios (a/b). Each nozzle was made of acrylic so that visualization was possible. With the injection pressure, the internal flow of the nozzle was classified into the no-cavitation, cavitation, and hydraulic-flip regions. Regardless of the nozzle geometry, with the injection pressure, the flow rate in the no-cavitation and cavitation regions increased and the discharge coefficient decreased. However, the flow rate was constant in the hydraulic-flip region. In the elliptical nozzles, the generation and development of cavitation occurred at higher cavitation number than that in the case of a circular nozzle.
| Original language | English |
|---|---|
| Pages (from-to) | 933-939 |
| Number of pages | 7 |
| Journal | Transactions of the Korean Society of Mechanical Engineers, B |
| Volume | 34 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 2010 |
Keywords
- Discharge coefficient cavitation number
- Elliptical nozzle
- Nozzle cavitations