Hydraulic loss characteristics of closed-loop piping system during start-up process of mixed-flow pump

PurposeThe purpose of this study is to explore the transient characteristics of mixed-flow pumps during startup process.Design/methodology/approachThis study uses a full-flow field transient calculation method of mixed-flow pump based on a closed-loop model.FindingsThe findings show the hydraulic losses and internal flow characteristics of the piping system during the start-up process.Research limitations/implicationsLarge computational cost.Practical implicationsImprove the accuracy of current numerical simulation results in transient process of mixed-flow pump.Originality/valueSimplify the setting of boundary conditions in the transient calculation.