Observations of Rotating Cavitation in Rocket Turbopump Inducers.

摘要

Different forms of oscillating cavitation (rotating cavitation, attached cavitation and low cycle oscillations) were very common and posed serious problems for liquid rocket engine turbopumps. In this study, visual observations of these phenomena were made using a high speed camera. The following results were obtained: (1) backward traveling rotating cavitation was identified experimentally for the first time; (2) the low cycle oscillations have a relationship with rotating cavitation; and (3) a forward traveling rotating cavitation dissimilar to conventional rotating cavitation was found at lower cavitation number.