Analysis on Two Centrifugal Impeller Eye Calculating Models in Term of Different Optimum Requirements

Improving hydraulic efficiency and cavitation resistance are two main objects in centrifugal impeller design procedure and both of them are closely pertinent to impeller eye diameter. In design practice, the impeller eye dimension should be determined in different ranges in accordance with varying feature expectation. Based on analysis on two optimum programs associated to eye size, we presented rules to calculate impeller eye dimension for diverse requirements and provide theoretical basis for impeller designers. Moreover, this paper also discussed impacts of eye dimension on impeller geometric size and hydraulic characteristics at different angles. The results can offer beneficial references for impeller design and pump operation.