Flow visualization in centrifugal pumps 15 March 2021 | Research Journal of Petroleum Science & Engineering The research article 'Flow Visualization in Centrifugal Pumps:A Review of Methods and Experimental Studies' has been published in the Journal of Petroleum Science and Engineering. Abstract Methods for flow visualization have been decisive for the historical development of fluid mechanics. In recent years, technological advances in cameras, lasers, and other devices improved the accuracy and reliability of methods such as High-Speed Imaging (HSI) and Particle Image Velocimetry (PIV), which have become more efficient in visualizing complex transient flows. Thus, the study of centrifugal pumps now relies on experimental techniques that enable a quantitative characterization of single- and two-phase flows within impellers and diffusers. This is particularly important for oil production, which massively employs the so-called