Investigations of drilled and multi-piped impellers cavitation performance

Abstract

The industry needs the rotodynamic pumps operating with ultra-low specific speed and relatively low flow rate more often. Designing of such structures on acceptable efficiency level is extremely difficult and require nonstandard approach to design as for example: drilled impeller or patented by author multi-piped impeller. Such pump elements are very easy to manufacture and operate with relatively high efficiency, but cavitation behavior is unknown.

Keywords

• drilled impeller
• multi-piped impeller
• cavitation
• cfd