Studying the variation of the slip factor when trimming the impeller of centrifugal pumps

Abstract It is well-known that one of the reasons for reducing head a centrifugal pump, when trimming its impeller, reduction slip factor. There are various methods used to determine it, but there lack information on whether they applicable in case pump with trimmed impeller operates. In present work, comparative experimental study concerning applicability some factor, two pumps different specific speed rotation, performed. Based data, CFD models impellers have been validated and numerical simulation change factor during trimming, has also The impact rate variation established. results found, performed study, equations describing relationship between studied obtained.